From dc26c7625da4983ea8c7a41cbc44d3f1a7d97f16 Mon Sep 17 00:00:00 2001
From: Libin YANG <contact@yanglibin.info>
Date: Mon, 13 May 2024 09:35:33 +0800
Subject: [PATCH 01/12] feat: add solutions to lc problems: No.0994,3147
 (#2798)

* No.0994.Rotting Oranges
* No.3147.Taking Maximum Energy From the Mystic Dungeon
---
 .../0900-0999/0994.Rotting Oranges/README.md  | 216 +++++++++---------
 .../0994.Rotting Oranges/README_EN.md         | 216 +++++++++---------
 .../0994.Rotting Oranges/Solution.cpp         |  26 +--
 .../0994.Rotting Oranges/Solution.go          |  32 ++-
 .../0994.Rotting Oranges/Solution.java        |  24 +-
 .../0994.Rotting Oranges/Solution.py          |  17 +-
 .../0994.Rotting Oranges/Solution.rs          |  61 ++---
 .../0994.Rotting Oranges/Solution.ts          |  46 ++--
 .../README.md                                 |  71 +++++-
 .../README_EN.md                              |  71 +++++-
 .../Solution.cpp                              |  14 ++
 .../Solution.go                               |  11 +
 .../Solution.java                             |  13 ++
 .../Solution.py                               |  11 +
 .../Solution.ts                               |  11 +
 15 files changed, 509 insertions(+), 331 deletions(-)
 create mode 100644 solution/3100-3199/3147.Taking Maximum Energy From the Mystic Dungeon/Solution.cpp
 create mode 100644 solution/3100-3199/3147.Taking Maximum Energy From the Mystic Dungeon/Solution.go
 create mode 100644 solution/3100-3199/3147.Taking Maximum Energy From the Mystic Dungeon/Solution.java
 create mode 100644 solution/3100-3199/3147.Taking Maximum Energy From the Mystic Dungeon/Solution.py
 create mode 100644 solution/3100-3199/3147.Taking Maximum Energy From the Mystic Dungeon/Solution.ts

diff --git a/solution/0900-0999/0994.Rotting Oranges/README.md b/solution/0900-0999/0994.Rotting Oranges/README.md
index d85eb89847af1..941ea8d14a796 100644
--- a/solution/0900-0999/0994.Rotting Oranges/README.md	
+++ b/solution/0900-0999/0994.Rotting Oranges/README.md	
@@ -60,7 +60,15 @@
 
 ## 解法
 
-### 方法一
+### 方法一：BFS
+
+我们首先遍历一遍整个网格，统计出新鲜橘子的数量，记为 $\text{cnt}$，并且将所有腐烂的橘子的坐标加入队列 $q$ 中。
+
+接下来，我们进行广度优先搜索，每一轮搜索，我们将队列中的所有腐烂的橘子向四个方向腐烂新鲜橘子，直到队列为空或者新鲜橘子的数量为 $0$ 为止。
+
+最后，如果新鲜橘子的数量为 $0$，则返回当前的轮数，否则返回 $-1$。
+
+时间复杂度 $O(m \times n)$，空间复杂度 $O(m \times n)$。其中 $m$ 和 $n$ 分别是网格的行数和列数。
 
 <!-- tabs:start -->
 
@@ -70,54 +78,53 @@ class Solution:
         m, n = len(grid), len(grid[0])
         q = deque()
         cnt = 0
-        for i in range(m):
-            for j in range(n):
-                if grid[i][j] == 2:
-                    q.append((i, j))
-                elif grid[i][j] == 1:
+        for i, row in enumerate(grid):
+            for j, x in enumerate(row):
+                if x == 1:
                     cnt += 1
+                elif x == 2:
+                    q.append((i, j))
+        dirs = (-1, 0, 1, 0, -1)
         ans = 0
         while q and cnt:
             ans += 1
             for _ in range(len(q)):
                 i, j = q.popleft()
-                for a, b in [[0, 1], [0, -1], [1, 0], [-1, 0]]:
+                for a, b in pairwise(dirs):
                     x, y = i + a, j + b
                     if 0 <= x < m and 0 <= y < n and grid[x][y] == 1:
-                        cnt -= 1
                         grid[x][y] = 2
                         q.append((x, y))
-        return ans if cnt == 0 else -1
+                        cnt -= 1
+        return -1 if cnt > 0 else ans
 ```
 
 ```java
 class Solution {
     public int orangesRotting(int[][] grid) {
         int m = grid.length, n = grid[0].length;
+        Deque<int[]> q = new ArrayDeque<>();
         int cnt = 0;
-        Deque<int[]> q = new LinkedList<>();
         for (int i = 0; i < m; ++i) {
             for (int j = 0; j < n; ++j) {
-                if (grid[i][j] == 2) {
-                    q.offer(new int[] {i, j});
-                } else if (grid[i][j] == 1) {
+                if (grid[i][j] == 1) {
                     ++cnt;
+                } else if (grid[i][j] == 2) {
+                    q.offer(new int[] {i, j});
                 }
             }
         }
+        final int[] dirs = {-1, 0, 1, 0, -1};
         int ans = 0;
-        int[] dirs = {1, 0, -1, 0, 1};
-        while (!q.isEmpty() && cnt > 0) {
-            ++ans;
-            for (int i = q.size(); i > 0; --i) {
-                int[] p = q.poll();
-                for (int j = 0; j < 4; ++j) {
-                    int x = p[0] + dirs[j];
-                    int y = p[1] + dirs[j + 1];
+        for (; !q.isEmpty() && cnt > 0; ++ans) {
+            for (int k = q.size(); k > 0; --k) {
+                var p = q.poll();
+                for (int d = 0; d < 4; ++d) {
+                    int x = p[0] + dirs[d], y = p[1] + dirs[d + 1];
                     if (x >= 0 && x < m && y >= 0 && y < n && grid[x][y] == 1) {
                         grid[x][y] = 2;
-                        --cnt;
                         q.offer(new int[] {x, y});
+                        --cnt;
                     }
                 }
             }
@@ -132,31 +139,29 @@ class Solution {
 public:
     int orangesRotting(vector<vector<int>>& grid) {
         int m = grid.size(), n = grid[0].size();
+        queue<pair<int, int>> q;
         int cnt = 0;
-        typedef pair<int, int> pii;
-        queue<pii> q;
         for (int i = 0; i < m; ++i) {
             for (int j = 0; j < n; ++j) {
-                if (grid[i][j] == 2)
-                    q.emplace(i, j);
-                else if (grid[i][j] == 1)
+                if (grid[i][j] == 1) {
                     ++cnt;
+                } else if (grid[i][j] == 2) {
+                    q.emplace(i, j);
+                }
             }
         }
         int ans = 0;
-        vector<int> dirs = {-1, 0, 1, 0, -1};
-        while (!q.empty() && cnt > 0) {
-            ++ans;
-            for (int i = q.size(); i > 0; --i) {
-                auto p = q.front();
+        const int dirs[5] = {-1, 0, 1, 0, -1};
+        for (; q.size() && cnt; ++ans) {
+            for (int k = q.size(); k; --k) {
+                auto [i, j] = q.front();
                 q.pop();
-                for (int j = 0; j < 4; ++j) {
-                    int x = p.first + dirs[j];
-                    int y = p.second + dirs[j + 1];
+                for (int d = 0; d < 4; ++d) {
+                    int x = i + dirs[d], y = j + dirs[d + 1];
                     if (x >= 0 && x < m && y >= 0 && y < n && grid[x][y] == 1) {
-                        --cnt;
                         grid[x][y] = 2;
                         q.emplace(x, y);
+                        --cnt;
                     }
                 }
             }
@@ -167,32 +172,30 @@ public:
 ```
 
 ```go
-func orangesRotting(grid [][]int) int {
+func orangesRotting(grid [][]int) (ans int) {
 	m, n := len(grid), len(grid[0])
+	q := [][2]int{}
 	cnt := 0
-	var q [][]int
-	for i := 0; i < m; i++ {
-		for j := 0; j < n; j++ {
-			if grid[i][j] == 2 {
-				q = append(q, []int{i, j})
-			} else if grid[i][j] == 1 {
+	for i, row := range grid {
+		for j, x := range row {
+			if x == 1 {
 				cnt++
+			} else if x == 2 {
+				q = append(q, [2]int{i, j})
 			}
 		}
 	}
-	ans := 0
-	dirs := []int{-1, 0, 1, 0, -1}
-	for len(q) > 0 && cnt > 0 {
-		ans++
-		for i := len(q); i > 0; i-- {
+	dirs := [5]int{-1, 0, 1, 0, -1}
+	for ; len(q) > 0 && cnt > 0; ans++ {
+		for k := len(q); k > 0; k-- {
 			p := q[0]
 			q = q[1:]
-			for j := 0; j < 4; j++ {
-				x, y := p[0]+dirs[j], p[1]+dirs[j+1]
+			for d := 0; d < 4; d++ {
+				x, y := p[0]+dirs[d], p[1]+dirs[d+1]
 				if x >= 0 && x < m && y >= 0 && y < n && grid[x][y] == 1 {
-					cnt--
 					grid[x][y] = 2
-					q = append(q, []int{x, y})
+					q = append(q, [2]int{x, y})
+					cnt--
 				}
 			}
 		}
@@ -200,46 +203,42 @@ func orangesRotting(grid [][]int) int {
 	if cnt > 0 {
 		return -1
 	}
-	return ans
+	return
 }
 ```
 
 ```ts
 function orangesRotting(grid: number[][]): number {
-    const m = grid.length;
-    const n = grid[0].length;
-    let count = 0;
-    const queue = [];
-    for (let i = 0; i < m; i++) {
-        for (let j = 0; j < n; j++) {
+    const m: number = grid.length;
+    const n: number = grid[0].length;
+    const q: number[][] = [];
+    let cnt: number = 0;
+    for (let i: number = 0; i < m; ++i) {
+        for (let j: number = 0; j < n; ++j) {
             if (grid[i][j] === 1) {
-                count++;
+                cnt++;
             } else if (grid[i][j] === 2) {
-                queue.push([i, j]);
+                q.push([i, j]);
             }
         }
     }
-    let res = 0;
-    const dris = [1, 0, -1, 0, 1];
-    while (count !== 0 && queue.length !== 0) {
-        for (let i = queue.length; i > 0; i--) {
-            const [x, y] = queue.shift();
-            for (let j = 0; j < 4; j++) {
-                const newX = x + dris[j];
-                const newY = y + dris[j + 1];
-                if (newX >= 0 && newX < m && newY >= 0 && newY <= n && grid[newX][newY] === 1) {
-                    grid[newX][newY] = 2;
-                    queue.push([newX, newY]);
-                    count--;
+    let ans: number = 0;
+    const dirs: number[] = [-1, 0, 1, 0, -1];
+    for (; q.length && cnt; ++ans) {
+        const t: number[][] = [];
+        for (const [i, j] of q) {
+            for (let d = 0; d < 4; ++d) {
+                const [x, y] = [i + dirs[d], j + dirs[d + 1]];
+                if (x >= 0 && x < m && y >= 0 && y < n && grid[x][y] === 1) {
+                    grid[x][y] = 2;
+                    t.push([x, y]);
+                    cnt--;
                 }
             }
         }
-        res++;
-    }
-    if (count != 0) {
-        return -1;
+        q.splice(0, q.length, ...t);
     }
-    return res;
+    return cnt > 0 ? -1 : ans;
 }
 ```
 
@@ -248,51 +247,52 @@ use std::collections::VecDeque;
 
 impl Solution {
     pub fn oranges_rotting(mut grid: Vec<Vec<i32>>) -> i32 {
-        let mut queue = VecDeque::new();
         let m = grid.len();
         let n = grid[0].len();
-        // 新鲜橘子数量
-        let mut count = 0;
+        let mut q = VecDeque::new();
+        let mut cnt = 0;
+
         for i in 0..m {
             for j in 0..n {
-                match grid[i][j] {
-                    1 => {
-                        count += 1;
-                    }
-                    2 => queue.push_back([i as i32, j as i32]),
-                    _ => (),
+                if grid[i][j] == 1 {
+                    cnt += 1;
+                } else if grid[i][j] == 2 {
+                    q.push_back(vec![i as i32, j as i32]);
                 }
             }
         }
-        let mut res = 0;
-        let dirs = [1, 0, -1, 0, 1];
-        while count != 0 && queue.len() != 0 {
-            let mut len = queue.len();
-            while len != 0 {
-                let [x, y] = queue.pop_front().unwrap();
-                for i in 0..4 {
-                    let new_x = x + dirs[i];
-                    let new_y = y + dirs[i + 1];
+
+        let dirs: [i32; 5] = [-1, 0, 1, 0, -1];
+        let mut ans = 0;
+
+        while !q.is_empty() && cnt > 0 {
+            let q_size = q.len();
+            for _ in 0..q_size {
+                let p = q.pop_front().unwrap();
+                for d in 0..4 {
+                    let x = p[0] + dirs[d];
+                    let y = p[1] + dirs[d + 1];
                     if
-                        new_x >= 0 &&
-                        new_x < (m as i32) &&
-                        new_y >= 0 &&
-                        new_y < (n as i32) &&
-                        grid[new_x as usize][new_y as usize] == 1
+                        x >= 0 &&
+                        x < (m as i32) &&
+                        y >= 0 &&
+                        y < (n as i32) &&
+                        grid[x as usize][y as usize] == 1
                     {
-                        grid[new_x as usize][new_y as usize] = 2;
-                        queue.push_back([new_x, new_y]);
-                        count -= 1;
+                        grid[x as usize][y as usize] = 2;
+                        q.push_back(vec![x, y]);
+                        cnt -= 1;
                     }
                 }
-                len -= 1;
             }
-            res += 1;
+            ans += 1;
         }
-        if count != 0 {
+
+        if cnt > 0 {
             return -1;
         }
-        res
+
+        ans
     }
 }
 ```
diff --git a/solution/0900-0999/0994.Rotting Oranges/README_EN.md b/solution/0900-0999/0994.Rotting Oranges/README_EN.md
index 8816f830cfab7..be71f24f5d19b 100644
--- a/solution/0900-0999/0994.Rotting Oranges/README_EN.md	
+++ b/solution/0900-0999/0994.Rotting Oranges/README_EN.md	
@@ -54,7 +54,15 @@
 
 ## Solutions
 
-### Solution 1
+### Solution 1: BFS
+
+First, we traverse the entire grid once, count the number of fresh oranges, denoted as $\text{cnt}$, and add the coordinates of all rotten oranges to the queue $q$.
+
+Next, we perform a breadth-first search. In each round of the search, we let all the rotten oranges in the queue rot the fresh oranges in four directions, until the queue is empty or the number of fresh oranges is $0$.
+
+Finally, if the number of fresh oranges is $0$, we return the current round number, otherwise, we return $-1$.
+
+The time complexity is $O(m \times n)$, and the space complexity is $O(m \times n)$. Where $m$ and $n$ are the number of rows and columns of the grid, respectively.
 
 <!-- tabs:start -->
 
@@ -64,54 +72,53 @@ class Solution:
         m, n = len(grid), len(grid[0])
         q = deque()
         cnt = 0
-        for i in range(m):
-            for j in range(n):
-                if grid[i][j] == 2:
-                    q.append((i, j))
-                elif grid[i][j] == 1:
+        for i, row in enumerate(grid):
+            for j, x in enumerate(row):
+                if x == 1:
                     cnt += 1
+                elif x == 2:
+                    q.append((i, j))
+        dirs = (-1, 0, 1, 0, -1)
         ans = 0
         while q and cnt:
             ans += 1
             for _ in range(len(q)):
                 i, j = q.popleft()
-                for a, b in [[0, 1], [0, -1], [1, 0], [-1, 0]]:
+                for a, b in pairwise(dirs):
                     x, y = i + a, j + b
                     if 0 <= x < m and 0 <= y < n and grid[x][y] == 1:
-                        cnt -= 1
                         grid[x][y] = 2
                         q.append((x, y))
-        return ans if cnt == 0 else -1
+                        cnt -= 1
+        return -1 if cnt > 0 else ans
 ```
 
 ```java
 class Solution {
     public int orangesRotting(int[][] grid) {
         int m = grid.length, n = grid[0].length;
+        Deque<int[]> q = new ArrayDeque<>();
         int cnt = 0;
-        Deque<int[]> q = new LinkedList<>();
         for (int i = 0; i < m; ++i) {
             for (int j = 0; j < n; ++j) {
-                if (grid[i][j] == 2) {
-                    q.offer(new int[] {i, j});
-                } else if (grid[i][j] == 1) {
+                if (grid[i][j] == 1) {
                     ++cnt;
+                } else if (grid[i][j] == 2) {
+                    q.offer(new int[] {i, j});
                 }
             }
         }
+        final int[] dirs = {-1, 0, 1, 0, -1};
         int ans = 0;
-        int[] dirs = {1, 0, -1, 0, 1};
-        while (!q.isEmpty() && cnt > 0) {
-            ++ans;
-            for (int i = q.size(); i > 0; --i) {
-                int[] p = q.poll();
-                for (int j = 0; j < 4; ++j) {
-                    int x = p[0] + dirs[j];
-                    int y = p[1] + dirs[j + 1];
+        for (; !q.isEmpty() && cnt > 0; ++ans) {
+            for (int k = q.size(); k > 0; --k) {
+                var p = q.poll();
+                for (int d = 0; d < 4; ++d) {
+                    int x = p[0] + dirs[d], y = p[1] + dirs[d + 1];
                     if (x >= 0 && x < m && y >= 0 && y < n && grid[x][y] == 1) {
                         grid[x][y] = 2;
-                        --cnt;
                         q.offer(new int[] {x, y});
+                        --cnt;
                     }
                 }
             }
@@ -126,31 +133,29 @@ class Solution {
 public:
     int orangesRotting(vector<vector<int>>& grid) {
         int m = grid.size(), n = grid[0].size();
+        queue<pair<int, int>> q;
         int cnt = 0;
-        typedef pair<int, int> pii;
-        queue<pii> q;
         for (int i = 0; i < m; ++i) {
             for (int j = 0; j < n; ++j) {
-                if (grid[i][j] == 2)
-                    q.emplace(i, j);
-                else if (grid[i][j] == 1)
+                if (grid[i][j] == 1) {
                     ++cnt;
+                } else if (grid[i][j] == 2) {
+                    q.emplace(i, j);
+                }
             }
         }
         int ans = 0;
-        vector<int> dirs = {-1, 0, 1, 0, -1};
-        while (!q.empty() && cnt > 0) {
-            ++ans;
-            for (int i = q.size(); i > 0; --i) {
-                auto p = q.front();
+        const int dirs[5] = {-1, 0, 1, 0, -1};
+        for (; q.size() && cnt; ++ans) {
+            for (int k = q.size(); k; --k) {
+                auto [i, j] = q.front();
                 q.pop();
-                for (int j = 0; j < 4; ++j) {
-                    int x = p.first + dirs[j];
-                    int y = p.second + dirs[j + 1];
+                for (int d = 0; d < 4; ++d) {
+                    int x = i + dirs[d], y = j + dirs[d + 1];
                     if (x >= 0 && x < m && y >= 0 && y < n && grid[x][y] == 1) {
-                        --cnt;
                         grid[x][y] = 2;
                         q.emplace(x, y);
+                        --cnt;
                     }
                 }
             }
@@ -161,32 +166,30 @@ public:
 ```
 
 ```go
-func orangesRotting(grid [][]int) int {
+func orangesRotting(grid [][]int) (ans int) {
 	m, n := len(grid), len(grid[0])
+	q := [][2]int{}
 	cnt := 0
-	var q [][]int
-	for i := 0; i < m; i++ {
-		for j := 0; j < n; j++ {
-			if grid[i][j] == 2 {
-				q = append(q, []int{i, j})
-			} else if grid[i][j] == 1 {
+	for i, row := range grid {
+		for j, x := range row {
+			if x == 1 {
 				cnt++
+			} else if x == 2 {
+				q = append(q, [2]int{i, j})
 			}
 		}
 	}
-	ans := 0
-	dirs := []int{-1, 0, 1, 0, -1}
-	for len(q) > 0 && cnt > 0 {
-		ans++
-		for i := len(q); i > 0; i-- {
+	dirs := [5]int{-1, 0, 1, 0, -1}
+	for ; len(q) > 0 && cnt > 0; ans++ {
+		for k := len(q); k > 0; k-- {
 			p := q[0]
 			q = q[1:]
-			for j := 0; j < 4; j++ {
-				x, y := p[0]+dirs[j], p[1]+dirs[j+1]
+			for d := 0; d < 4; d++ {
+				x, y := p[0]+dirs[d], p[1]+dirs[d+1]
 				if x >= 0 && x < m && y >= 0 && y < n && grid[x][y] == 1 {
-					cnt--
 					grid[x][y] = 2
-					q = append(q, []int{x, y})
+					q = append(q, [2]int{x, y})
+					cnt--
 				}
 			}
 		}
@@ -194,46 +197,42 @@ func orangesRotting(grid [][]int) int {
 	if cnt > 0 {
 		return -1
 	}
-	return ans
+	return
 }
 ```
 
 ```ts
 function orangesRotting(grid: number[][]): number {
-    const m = grid.length;
-    const n = grid[0].length;
-    let count = 0;
-    const queue = [];
-    for (let i = 0; i < m; i++) {
-        for (let j = 0; j < n; j++) {
+    const m: number = grid.length;
+    const n: number = grid[0].length;
+    const q: number[][] = [];
+    let cnt: number = 0;
+    for (let i: number = 0; i < m; ++i) {
+        for (let j: number = 0; j < n; ++j) {
             if (grid[i][j] === 1) {
-                count++;
+                cnt++;
             } else if (grid[i][j] === 2) {
-                queue.push([i, j]);
+                q.push([i, j]);
             }
         }
     }
-    let res = 0;
-    const dris = [1, 0, -1, 0, 1];
-    while (count !== 0 && queue.length !== 0) {
-        for (let i = queue.length; i > 0; i--) {
-            const [x, y] = queue.shift();
-            for (let j = 0; j < 4; j++) {
-                const newX = x + dris[j];
-                const newY = y + dris[j + 1];
-                if (newX >= 0 && newX < m && newY >= 0 && newY <= n && grid[newX][newY] === 1) {
-                    grid[newX][newY] = 2;
-                    queue.push([newX, newY]);
-                    count--;
+    let ans: number = 0;
+    const dirs: number[] = [-1, 0, 1, 0, -1];
+    for (; q.length && cnt; ++ans) {
+        const t: number[][] = [];
+        for (const [i, j] of q) {
+            for (let d = 0; d < 4; ++d) {
+                const [x, y] = [i + dirs[d], j + dirs[d + 1]];
+                if (x >= 0 && x < m && y >= 0 && y < n && grid[x][y] === 1) {
+                    grid[x][y] = 2;
+                    t.push([x, y]);
+                    cnt--;
                 }
             }
         }
-        res++;
-    }
-    if (count != 0) {
-        return -1;
+        q.splice(0, q.length, ...t);
     }
-    return res;
+    return cnt > 0 ? -1 : ans;
 }
 ```
 
@@ -242,51 +241,52 @@ use std::collections::VecDeque;
 
 impl Solution {
     pub fn oranges_rotting(mut grid: Vec<Vec<i32>>) -> i32 {
-        let mut queue = VecDeque::new();
         let m = grid.len();
         let n = grid[0].len();
-        // 新鲜橘子数量
-        let mut count = 0;
+        let mut q = VecDeque::new();
+        let mut cnt = 0;
+
         for i in 0..m {
             for j in 0..n {
-                match grid[i][j] {
-                    1 => {
-                        count += 1;
-                    }
-                    2 => queue.push_back([i as i32, j as i32]),
-                    _ => (),
+                if grid[i][j] == 1 {
+                    cnt += 1;
+                } else if grid[i][j] == 2 {
+                    q.push_back(vec![i as i32, j as i32]);
                 }
             }
         }
-        let mut res = 0;
-        let dirs = [1, 0, -1, 0, 1];
-        while count != 0 && queue.len() != 0 {
-            let mut len = queue.len();
-            while len != 0 {
-                let [x, y] = queue.pop_front().unwrap();
-                for i in 0..4 {
-                    let new_x = x + dirs[i];
-                    let new_y = y + dirs[i + 1];
+
+        let dirs: [i32; 5] = [-1, 0, 1, 0, -1];
+        let mut ans = 0;
+
+        while !q.is_empty() && cnt > 0 {
+            let q_size = q.len();
+            for _ in 0..q_size {
+                let p = q.pop_front().unwrap();
+                for d in 0..4 {
+                    let x = p[0] + dirs[d];
+                    let y = p[1] + dirs[d + 1];
                     if
-                        new_x >= 0 &&
-                        new_x < (m as i32) &&
-                        new_y >= 0 &&
-                        new_y < (n as i32) &&
-                        grid[new_x as usize][new_y as usize] == 1
+                        x >= 0 &&
+                        x < (m as i32) &&
+                        y >= 0 &&
+                        y < (n as i32) &&
+                        grid[x as usize][y as usize] == 1
                     {
-                        grid[new_x as usize][new_y as usize] = 2;
-                        queue.push_back([new_x, new_y]);
-                        count -= 1;
+                        grid[x as usize][y as usize] = 2;
+                        q.push_back(vec![x, y]);
+                        cnt -= 1;
                     }
                 }
-                len -= 1;
             }
-            res += 1;
+            ans += 1;
         }
-        if count != 0 {
+
+        if cnt > 0 {
             return -1;
         }
-        res
+
+        ans
     }
 }
 ```
diff --git a/solution/0900-0999/0994.Rotting Oranges/Solution.cpp b/solution/0900-0999/0994.Rotting Oranges/Solution.cpp
index 5c22df84639a2..c5c21ac6401a1 100644
--- a/solution/0900-0999/0994.Rotting Oranges/Solution.cpp	
+++ b/solution/0900-0999/0994.Rotting Oranges/Solution.cpp	
@@ -2,31 +2,29 @@ class Solution {
 public:
     int orangesRotting(vector<vector<int>>& grid) {
         int m = grid.size(), n = grid[0].size();
+        queue<pair<int, int>> q;
         int cnt = 0;
-        typedef pair<int, int> pii;
-        queue<pii> q;
         for (int i = 0; i < m; ++i) {
             for (int j = 0; j < n; ++j) {
-                if (grid[i][j] == 2)
-                    q.emplace(i, j);
-                else if (grid[i][j] == 1)
+                if (grid[i][j] == 1) {
                     ++cnt;
+                } else if (grid[i][j] == 2) {
+                    q.emplace(i, j);
+                }
             }
         }
         int ans = 0;
-        vector<int> dirs = {-1, 0, 1, 0, -1};
-        while (!q.empty() && cnt > 0) {
-            ++ans;
-            for (int i = q.size(); i > 0; --i) {
-                auto p = q.front();
+        const int dirs[5] = {-1, 0, 1, 0, -1};
+        for (; q.size() && cnt; ++ans) {
+            for (int k = q.size(); k; --k) {
+                auto [i, j] = q.front();
                 q.pop();
-                for (int j = 0; j < 4; ++j) {
-                    int x = p.first + dirs[j];
-                    int y = p.second + dirs[j + 1];
+                for (int d = 0; d < 4; ++d) {
+                    int x = i + dirs[d], y = j + dirs[d + 1];
                     if (x >= 0 && x < m && y >= 0 && y < n && grid[x][y] == 1) {
-                        --cnt;
                         grid[x][y] = 2;
                         q.emplace(x, y);
+                        --cnt;
                     }
                 }
             }
diff --git a/solution/0900-0999/0994.Rotting Oranges/Solution.go b/solution/0900-0999/0994.Rotting Oranges/Solution.go
index cda8e1429cefd..ab1d4edfc33a5 100644
--- a/solution/0900-0999/0994.Rotting Oranges/Solution.go	
+++ b/solution/0900-0999/0994.Rotting Oranges/Solution.go	
@@ -1,29 +1,27 @@
-func orangesRotting(grid [][]int) int {
+func orangesRotting(grid [][]int) (ans int) {
 	m, n := len(grid), len(grid[0])
+	q := [][2]int{}
 	cnt := 0
-	var q [][]int
-	for i := 0; i < m; i++ {
-		for j := 0; j < n; j++ {
-			if grid[i][j] == 2 {
-				q = append(q, []int{i, j})
-			} else if grid[i][j] == 1 {
+	for i, row := range grid {
+		for j, x := range row {
+			if x == 1 {
 				cnt++
+			} else if x == 2 {
+				q = append(q, [2]int{i, j})
 			}
 		}
 	}
-	ans := 0
-	dirs := []int{-1, 0, 1, 0, -1}
-	for len(q) > 0 && cnt > 0 {
-		ans++
-		for i := len(q); i > 0; i-- {
+	dirs := [5]int{-1, 0, 1, 0, -1}
+	for ; len(q) > 0 && cnt > 0; ans++ {
+		for k := len(q); k > 0; k-- {
 			p := q[0]
 			q = q[1:]
-			for j := 0; j < 4; j++ {
-				x, y := p[0]+dirs[j], p[1]+dirs[j+1]
+			for d := 0; d < 4; d++ {
+				x, y := p[0]+dirs[d], p[1]+dirs[d+1]
 				if x >= 0 && x < m && y >= 0 && y < n && grid[x][y] == 1 {
-					cnt--
 					grid[x][y] = 2
-					q = append(q, []int{x, y})
+					q = append(q, [2]int{x, y})
+					cnt--
 				}
 			}
 		}
@@ -31,5 +29,5 @@ func orangesRotting(grid [][]int) int {
 	if cnt > 0 {
 		return -1
 	}
-	return ans
+	return
 }
\ No newline at end of file
diff --git a/solution/0900-0999/0994.Rotting Oranges/Solution.java b/solution/0900-0999/0994.Rotting Oranges/Solution.java
index 84d1624900eb7..658b248d52af6 100644
--- a/solution/0900-0999/0994.Rotting Oranges/Solution.java	
+++ b/solution/0900-0999/0994.Rotting Oranges/Solution.java	
@@ -1,30 +1,28 @@
 class Solution {
     public int orangesRotting(int[][] grid) {
         int m = grid.length, n = grid[0].length;
+        Deque<int[]> q = new ArrayDeque<>();
         int cnt = 0;
-        Deque<int[]> q = new LinkedList<>();
         for (int i = 0; i < m; ++i) {
             for (int j = 0; j < n; ++j) {
-                if (grid[i][j] == 2) {
-                    q.offer(new int[] {i, j});
-                } else if (grid[i][j] == 1) {
+                if (grid[i][j] == 1) {
                     ++cnt;
+                } else if (grid[i][j] == 2) {
+                    q.offer(new int[] {i, j});
                 }
             }
         }
+        final int[] dirs = {-1, 0, 1, 0, -1};
         int ans = 0;
-        int[] dirs = {1, 0, -1, 0, 1};
-        while (!q.isEmpty() && cnt > 0) {
-            ++ans;
-            for (int i = q.size(); i > 0; --i) {
-                int[] p = q.poll();
-                for (int j = 0; j < 4; ++j) {
-                    int x = p[0] + dirs[j];
-                    int y = p[1] + dirs[j + 1];
+        for (; !q.isEmpty() && cnt > 0; ++ans) {
+            for (int k = q.size(); k > 0; --k) {
+                var p = q.poll();
+                for (int d = 0; d < 4; ++d) {
+                    int x = p[0] + dirs[d], y = p[1] + dirs[d + 1];
                     if (x >= 0 && x < m && y >= 0 && y < n && grid[x][y] == 1) {
                         grid[x][y] = 2;
-                        --cnt;
                         q.offer(new int[] {x, y});
+                        --cnt;
                     }
                 }
             }
diff --git a/solution/0900-0999/0994.Rotting Oranges/Solution.py b/solution/0900-0999/0994.Rotting Oranges/Solution.py
index 66ec796bf2919..61012d6825f98 100644
--- a/solution/0900-0999/0994.Rotting Oranges/Solution.py	
+++ b/solution/0900-0999/0994.Rotting Oranges/Solution.py	
@@ -3,21 +3,22 @@ def orangesRotting(self, grid: List[List[int]]) -> int:
         m, n = len(grid), len(grid[0])
         q = deque()
         cnt = 0
-        for i in range(m):
-            for j in range(n):
-                if grid[i][j] == 2:
-                    q.append((i, j))
-                elif grid[i][j] == 1:
+        for i, row in enumerate(grid):
+            for j, x in enumerate(row):
+                if x == 1:
                     cnt += 1
+                elif x == 2:
+                    q.append((i, j))
+        dirs = (-1, 0, 1, 0, -1)
         ans = 0
         while q and cnt:
             ans += 1
             for _ in range(len(q)):
                 i, j = q.popleft()
-                for a, b in [[0, 1], [0, -1], [1, 0], [-1, 0]]:
+                for a, b in pairwise(dirs):
                     x, y = i + a, j + b
                     if 0 <= x < m and 0 <= y < n and grid[x][y] == 1:
-                        cnt -= 1
                         grid[x][y] = 2
                         q.append((x, y))
-        return ans if cnt == 0 else -1
+                        cnt -= 1
+        return -1 if cnt > 0 else ans
diff --git a/solution/0900-0999/0994.Rotting Oranges/Solution.rs b/solution/0900-0999/0994.Rotting Oranges/Solution.rs
index 00c99af89c968..0c6425dd07515 100644
--- a/solution/0900-0999/0994.Rotting Oranges/Solution.rs	
+++ b/solution/0900-0999/0994.Rotting Oranges/Solution.rs	
@@ -2,50 +2,51 @@ use std::collections::VecDeque;
 
 impl Solution {
     pub fn oranges_rotting(mut grid: Vec<Vec<i32>>) -> i32 {
-        let mut queue = VecDeque::new();
         let m = grid.len();
         let n = grid[0].len();
-        // 新鲜橘子数量
-        let mut count = 0;
+        let mut q = VecDeque::new();
+        let mut cnt = 0;
+
         for i in 0..m {
             for j in 0..n {
-                match grid[i][j] {
-                    1 => {
-                        count += 1;
-                    }
-                    2 => queue.push_back([i as i32, j as i32]),
-                    _ => (),
+                if grid[i][j] == 1 {
+                    cnt += 1;
+                } else if grid[i][j] == 2 {
+                    q.push_back(vec![i as i32, j as i32]);
                 }
             }
         }
-        let mut res = 0;
-        let dirs = [1, 0, -1, 0, 1];
-        while count != 0 && queue.len() != 0 {
-            let mut len = queue.len();
-            while len != 0 {
-                let [x, y] = queue.pop_front().unwrap();
-                for i in 0..4 {
-                    let new_x = x + dirs[i];
-                    let new_y = y + dirs[i + 1];
+
+        let dirs: [i32; 5] = [-1, 0, 1, 0, -1];
+        let mut ans = 0;
+
+        while !q.is_empty() && cnt > 0 {
+            let q_size = q.len();
+            for _ in 0..q_size {
+                let p = q.pop_front().unwrap();
+                for d in 0..4 {
+                    let x = p[0] + dirs[d];
+                    let y = p[1] + dirs[d + 1];
                     if
-                        new_x >= 0 &&
-                        new_x < (m as i32) &&
-                        new_y >= 0 &&
-                        new_y < (n as i32) &&
-                        grid[new_x as usize][new_y as usize] == 1
+                        x >= 0 &&
+                        x < (m as i32) &&
+                        y >= 0 &&
+                        y < (n as i32) &&
+                        grid[x as usize][y as usize] == 1
                     {
-                        grid[new_x as usize][new_y as usize] = 2;
-                        queue.push_back([new_x, new_y]);
-                        count -= 1;
+                        grid[x as usize][y as usize] = 2;
+                        q.push_back(vec![x, y]);
+                        cnt -= 1;
                     }
                 }
-                len -= 1;
             }
-            res += 1;
+            ans += 1;
         }
-        if count != 0 {
+
+        if cnt > 0 {
             return -1;
         }
-        res
+
+        ans
     }
 }
diff --git a/solution/0900-0999/0994.Rotting Oranges/Solution.ts b/solution/0900-0999/0994.Rotting Oranges/Solution.ts
index b4e9b51569d92..ecfeee94b3584 100644
--- a/solution/0900-0999/0994.Rotting Oranges/Solution.ts	
+++ b/solution/0900-0999/0994.Rotting Oranges/Solution.ts	
@@ -1,36 +1,32 @@
 function orangesRotting(grid: number[][]): number {
-    const m = grid.length;
-    const n = grid[0].length;
-    let count = 0;
-    const queue = [];
-    for (let i = 0; i < m; i++) {
-        for (let j = 0; j < n; j++) {
+    const m: number = grid.length;
+    const n: number = grid[0].length;
+    const q: number[][] = [];
+    let cnt: number = 0;
+    for (let i: number = 0; i < m; ++i) {
+        for (let j: number = 0; j < n; ++j) {
             if (grid[i][j] === 1) {
-                count++;
+                cnt++;
             } else if (grid[i][j] === 2) {
-                queue.push([i, j]);
+                q.push([i, j]);
             }
         }
     }
-    let res = 0;
-    const dris = [1, 0, -1, 0, 1];
-    while (count !== 0 && queue.length !== 0) {
-        for (let i = queue.length; i > 0; i--) {
-            const [x, y] = queue.shift();
-            for (let j = 0; j < 4; j++) {
-                const newX = x + dris[j];
-                const newY = y + dris[j + 1];
-                if (newX >= 0 && newX < m && newY >= 0 && newY <= n && grid[newX][newY] === 1) {
-                    grid[newX][newY] = 2;
-                    queue.push([newX, newY]);
-                    count--;
+    let ans: number = 0;
+    const dirs: number[] = [-1, 0, 1, 0, -1];
+    for (; q.length && cnt; ++ans) {
+        const t: number[][] = [];
+        for (const [i, j] of q) {
+            for (let d = 0; d < 4; ++d) {
+                const [x, y] = [i + dirs[d], j + dirs[d + 1]];
+                if (x >= 0 && x < m && y >= 0 && y < n && grid[x][y] === 1) {
+                    grid[x][y] = 2;
+                    t.push([x, y]);
+                    cnt--;
                 }
             }
         }
-        res++;
+        q.splice(0, q.length, ...t);
     }
-    if (count != 0) {
-        return -1;
-    }
-    return res;
+    return cnt > 0 ? -1 : ans;
 }
diff --git a/solution/3100-3199/3147.Taking Maximum Energy From the Mystic Dungeon/README.md b/solution/3100-3199/3147.Taking Maximum Energy From the Mystic Dungeon/README.md
index 79626073c4f5c..5547eb197fb53 100644
--- a/solution/3100-3199/3147.Taking Maximum Energy From the Mystic Dungeon/README.md	
+++ b/solution/3100-3199/3147.Taking Maximum Energy From the Mystic Dungeon/README.md	
@@ -82,24 +82,87 @@
 
 ## 解法
 
-### 方法一
+### 方法一：枚举 + 后缀和
+
+我们可以在 $[n - k, n)$ 的范围内枚举终点，然后从终点开始向前遍历，每次累加间隔为 $k$ 的魔法师的能量值，更新答案。
+
+时间复杂度 $O(n)$，其中 $n$ 是数组 `energy` 的长度。空间复杂度 $O(1)$。
 
 <!-- tabs:start -->
 
 ```python
-
+class Solution:
+    def maximumEnergy(self, energy: List[int], k: int) -> int:
+        ans = -inf
+        n = len(energy)
+        for i in range(n - k, n):
+            j, s = i, 0
+            while j >= 0:
+                s += energy[j]
+                ans = max(ans, s)
+                j -= k
+        return ans
 ```
 
 ```java
-
+class Solution {
+    public int maximumEnergy(int[] energy, int k) {
+        int ans = -(1 << 30);
+        int n = energy.length;
+        for (int i = n - k; i < n; ++i) {
+            for (int j = i, s = 0; j >= 0; j -= k) {
+                s += energy[j];
+                ans = Math.max(ans, s);
+            }
+        }
+        return ans;
+    }
+}
 ```
 
 ```cpp
-
+class Solution {
+public:
+    int maximumEnergy(vector<int>& energy, int k) {
+        int ans = -(1 << 30);
+        int n = energy.size();
+        for (int i = n - k; i < n; ++i) {
+            for (int j = i, s = 0; j >= 0; j -= k) {
+                s += energy[j];
+                ans = max(ans, s);
+            }
+        }
+        return ans;
+    }
+};
 ```
 
 ```go
+func maximumEnergy(energy []int, k int) int {
+	ans := -(1 << 30)
+	n := len(energy)
+	for i := n - k; i < n; i++ {
+		for j, s := i, 0; j >= 0; j -= k {
+			s += energy[j]
+			ans = max(ans, s)
+		}
+	}
+	return ans
+}
+```
 
+```ts
+function maximumEnergy(energy: number[], k: number): number {
+    const n = energy.length;
+    let ans = -Infinity;
+    for (let i = n - k; i < n; ++i) {
+        for (let j = i, s = 0; j >= 0; j -= k) {
+            s += energy[j];
+            ans = Math.max(ans, s);
+        }
+    }
+    return ans;
+}
 ```
 
 <!-- tabs:end -->
diff --git a/solution/3100-3199/3147.Taking Maximum Energy From the Mystic Dungeon/README_EN.md b/solution/3100-3199/3147.Taking Maximum Energy From the Mystic Dungeon/README_EN.md
index b317279c76440..05f6f13538966 100644
--- a/solution/3100-3199/3147.Taking Maximum Energy From the Mystic Dungeon/README_EN.md	
+++ b/solution/3100-3199/3147.Taking Maximum Energy From the Mystic Dungeon/README_EN.md	
@@ -79,24 +79,87 @@
 
 ## Solutions
 
-### Solution 1
+### Solution 1: Enumeration + Suffix Sum
+
+We can enumerate the endpoint in the range of $[n - k, n)$, then start from the endpoint and traverse backwards, adding the energy value of the magician at each $k$ interval, and update the answer.
+
+The time complexity is $O(n)$, where $n$ is the length of the array `energy`. The space complexity is $O(1)$.
 
 <!-- tabs:start -->
 
 ```python
-
+class Solution:
+    def maximumEnergy(self, energy: List[int], k: int) -> int:
+        ans = -inf
+        n = len(energy)
+        for i in range(n - k, n):
+            j, s = i, 0
+            while j >= 0:
+                s += energy[j]
+                ans = max(ans, s)
+                j -= k
+        return ans
 ```
 
 ```java
-
+class Solution {
+    public int maximumEnergy(int[] energy, int k) {
+        int ans = -(1 << 30);
+        int n = energy.length;
+        for (int i = n - k; i < n; ++i) {
+            for (int j = i, s = 0; j >= 0; j -= k) {
+                s += energy[j];
+                ans = Math.max(ans, s);
+            }
+        }
+        return ans;
+    }
+}
 ```
 
 ```cpp
-
+class Solution {
+public:
+    int maximumEnergy(vector<int>& energy, int k) {
+        int ans = -(1 << 30);
+        int n = energy.size();
+        for (int i = n - k; i < n; ++i) {
+            for (int j = i, s = 0; j >= 0; j -= k) {
+                s += energy[j];
+                ans = max(ans, s);
+            }
+        }
+        return ans;
+    }
+};
 ```
 
 ```go
+func maximumEnergy(energy []int, k int) int {
+	ans := -(1 << 30)
+	n := len(energy)
+	for i := n - k; i < n; i++ {
+		for j, s := i, 0; j >= 0; j -= k {
+			s += energy[j]
+			ans = max(ans, s)
+		}
+	}
+	return ans
+}
+```
 
+```ts
+function maximumEnergy(energy: number[], k: number): number {
+    const n = energy.length;
+    let ans = -Infinity;
+    for (let i = n - k; i < n; ++i) {
+        for (let j = i, s = 0; j >= 0; j -= k) {
+            s += energy[j];
+            ans = Math.max(ans, s);
+        }
+    }
+    return ans;
+}
 ```
 
 <!-- tabs:end -->
diff --git a/solution/3100-3199/3147.Taking Maximum Energy From the Mystic Dungeon/Solution.cpp b/solution/3100-3199/3147.Taking Maximum Energy From the Mystic Dungeon/Solution.cpp
new file mode 100644
index 0000000000000..9d12ba48da754
--- /dev/null
+++ b/solution/3100-3199/3147.Taking Maximum Energy From the Mystic Dungeon/Solution.cpp	
@@ -0,0 +1,14 @@
+class Solution {
+public:
+    int maximumEnergy(vector<int>& energy, int k) {
+        int ans = -(1 << 30);
+        int n = energy.size();
+        for (int i = n - k; i < n; ++i) {
+            for (int j = i, s = 0; j >= 0; j -= k) {
+                s += energy[j];
+                ans = max(ans, s);
+            }
+        }
+        return ans;
+    }
+};
\ No newline at end of file
diff --git a/solution/3100-3199/3147.Taking Maximum Energy From the Mystic Dungeon/Solution.go b/solution/3100-3199/3147.Taking Maximum Energy From the Mystic Dungeon/Solution.go
new file mode 100644
index 0000000000000..b170ebac66ea1
--- /dev/null
+++ b/solution/3100-3199/3147.Taking Maximum Energy From the Mystic Dungeon/Solution.go	
@@ -0,0 +1,11 @@
+func maximumEnergy(energy []int, k int) int {
+	ans := -(1 << 30)
+	n := len(energy)
+	for i := n - k; i < n; i++ {
+		for j, s := i, 0; j >= 0; j -= k {
+			s += energy[j]
+			ans = max(ans, s)
+		}
+	}
+	return ans
+}
\ No newline at end of file
diff --git a/solution/3100-3199/3147.Taking Maximum Energy From the Mystic Dungeon/Solution.java b/solution/3100-3199/3147.Taking Maximum Energy From the Mystic Dungeon/Solution.java
new file mode 100644
index 0000000000000..474b8c363d487
--- /dev/null
+++ b/solution/3100-3199/3147.Taking Maximum Energy From the Mystic Dungeon/Solution.java	
@@ -0,0 +1,13 @@
+class Solution {
+    public int maximumEnergy(int[] energy, int k) {
+        int ans = -(1 << 30);
+        int n = energy.length;
+        for (int i = n - k; i < n; ++i) {
+            for (int j = i, s = 0; j >= 0; j -= k) {
+                s += energy[j];
+                ans = Math.max(ans, s);
+            }
+        }
+        return ans;
+    }
+}
\ No newline at end of file
diff --git a/solution/3100-3199/3147.Taking Maximum Energy From the Mystic Dungeon/Solution.py b/solution/3100-3199/3147.Taking Maximum Energy From the Mystic Dungeon/Solution.py
new file mode 100644
index 0000000000000..d3959a3d63437
--- /dev/null
+++ b/solution/3100-3199/3147.Taking Maximum Energy From the Mystic Dungeon/Solution.py	
@@ -0,0 +1,11 @@
+class Solution:
+    def maximumEnergy(self, energy: List[int], k: int) -> int:
+        ans = -inf
+        n = len(energy)
+        for i in range(n - k, n):
+            j, s = i, 0
+            while j >= 0:
+                s += energy[j]
+                ans = max(ans, s)
+                j -= k
+        return ans
diff --git a/solution/3100-3199/3147.Taking Maximum Energy From the Mystic Dungeon/Solution.ts b/solution/3100-3199/3147.Taking Maximum Energy From the Mystic Dungeon/Solution.ts
new file mode 100644
index 0000000000000..ca05ebbbc0821
--- /dev/null
+++ b/solution/3100-3199/3147.Taking Maximum Energy From the Mystic Dungeon/Solution.ts	
@@ -0,0 +1,11 @@
+function maximumEnergy(energy: number[], k: number): number {
+    const n = energy.length;
+    let ans = -Infinity;
+    for (let i = n - k; i < n; ++i) {
+        for (let j = i, s = 0; j >= 0; j -= k) {
+            s += energy[j];
+            ans = Math.max(ans, s);
+        }
+    }
+    return ans;
+}

From 6fab7d6544dc187b9be2f68792045365e94ea327 Mon Sep 17 00:00:00 2001
From: Libin YANG <contact@yanglibin.info>
Date: Mon, 13 May 2024 11:04:45 +0800
Subject: [PATCH 02/12] feat: add solutions to lc problem: No.3148 (#2800)

No.3148.Maximum Difference Score in a Grid
---
 .../README.md                                 | 120 +++++++++++++++++-
 .../README_EN.md                              | 120 +++++++++++++++++-
 .../Solution.cpp                              |  23 ++++
 .../Solution.go                               |  23 ++++
 .../Solution.java                             |  22 ++++
 .../Solution.py                               |  14 ++
 .../Solution.ts                               |  19 +++
 7 files changed, 333 insertions(+), 8 deletions(-)
 create mode 100644 solution/3100-3199/3148.Maximum Difference Score in a Grid/Solution.cpp
 create mode 100644 solution/3100-3199/3148.Maximum Difference Score in a Grid/Solution.go
 create mode 100644 solution/3100-3199/3148.Maximum Difference Score in a Grid/Solution.java
 create mode 100644 solution/3100-3199/3148.Maximum Difference Score in a Grid/Solution.py
 create mode 100644 solution/3100-3199/3148.Maximum Difference Score in a Grid/Solution.ts

diff --git a/solution/3100-3199/3148.Maximum Difference Score in a Grid/README.md b/solution/3100-3199/3148.Maximum Difference Score in a Grid/README.md
index a3462d4561f7d..496b80388d5fa 100644
--- a/solution/3100-3199/3148.Maximum Difference Score in a Grid/README.md	
+++ b/solution/3100-3199/3148.Maximum Difference Score in a Grid/README.md	
@@ -55,24 +55,136 @@
 
 ## 解法
 
-### 方法一
+### 方法一：动态规划
+
+根据题目描述，如果我们经过的单元格的值依次是 $c_1, c_2, \cdots, c_k$，那么我们的得分就是 $c_2 - c_1 + c_3 - c_2 + \cdots + c_k - c_{k-1} = c_k - c_1$。因此，问题转化为：对于矩阵的每个单元格 $(i, j)$，如果我们将其作为终点，那么起点的最小值是多少。
+
+我们可以使用动态规划来解决这个问题。我们定义 $f[i][j]$ 表示以 $(i, j)$ 为终点的路径的最小值。那么我们可以得到状态转移方程：
+
+$$
+f[i][j] = \min(f[i-1][j], f[i][j-1], grid[i][j])
+$$
+
+那么答案为 $\text{grid}[i][j] - \min(f[i-1][j], f[i][j-1])$ 的最大值。
+
+时间复杂度 $O(m \times n)$，空间复杂度 $O(m \times n)$。其中 $m$ 和 $n$ 分别是矩阵的行数和列数。
 
 <!-- tabs:start -->
 
 ```python
-
+class Solution:
+    def maxScore(self, grid: List[List[int]]) -> int:
+        f = [[0] * len(grid[0]) for _ in range(len(grid))]
+        ans = -inf
+        for i, row in enumerate(grid):
+            for j, x in enumerate(row):
+                mi = inf
+                if i:
+                    mi = min(mi, f[i - 1][j])
+                if j:
+                    mi = min(mi, f[i][j - 1])
+                ans = max(ans, x - mi)
+                f[i][j] = min(x, mi)
+        return ans
 ```
 
 ```java
-
+class Solution {
+    public int maxScore(List<List<Integer>> grid) {
+        int m = grid.size(), n = grid.get(0).size();
+        final int inf = 1 << 30;
+        int ans = -inf;
+        int[][] f = new int[m][n];
+        for (int i = 0; i < m; ++i) {
+            for (int j = 0; j < n; ++j) {
+                int mi = inf;
+                if (i > 0) {
+                    mi = Math.min(mi, f[i - 1][j]);
+                }
+                if (j > 0) {
+                    mi = Math.min(mi, f[i][j - 1]);
+                }
+                ans = Math.max(ans, grid.get(i).get(j) - mi);
+                f[i][j] = Math.min(grid.get(i).get(j), mi);
+            }
+        }
+        return ans;
+    }
+}
 ```
 
 ```cpp
-
+class Solution {
+public:
+    int maxScore(vector<vector<int>>& grid) {
+        int m = grid.size(), n = grid[0].size();
+        const int inf = 1 << 30;
+        int ans = -inf;
+        int f[m][n];
+        for (int i = 0; i < m; ++i) {
+            for (int j = 0; j < n; ++j) {
+                int mi = inf;
+                if (i) {
+                    mi = min(mi, f[i - 1][j]);
+                }
+                if (j) {
+                    mi = min(mi, f[i][j - 1]);
+                }
+                ans = max(ans, grid[i][j] - mi);
+                f[i][j] = min(grid[i][j], mi);
+            }
+        }
+        return ans;
+    }
+};
 ```
 
 ```go
+func maxScore(grid [][]int) int {
+	m, n := len(grid), len(grid[0])
+	f := make([][]int, m)
+	for i := range f {
+		f[i] = make([]int, n)
+	}
+	const inf int = 1 << 30
+	ans := -inf
+	for i, row := range grid {
+		for j, x := range row {
+			mi := inf
+			if i > 0 {
+				mi = min(mi, f[i-1][j])
+			}
+			if j > 0 {
+				mi = min(mi, f[i][j-1])
+			}
+			ans = max(ans, x-mi)
+			f[i][j] = min(x, mi)
+		}
+	}
+	return ans
+}
+```
 
+```ts
+function maxScore(grid: number[][]): number {
+    const [m, n] = [grid.length, grid[0].length];
+    const f: number[][] = Array.from({ length: m }, () => Array.from({ length: n }, () => 0));
+    let ans = -Infinity;
+    for (let i = 0; i < m; ++i) {
+        for (let j = 0; j < n; ++j) {
+            let mi = Infinity;
+            if (i) {
+                mi = Math.min(mi, f[i - 1][j]);
+            }
+            if (j) {
+                mi = Math.min(mi, f[i][j - 1]);
+            }
+            ans = Math.max(ans, grid[i][j] - mi);
+            f[i][j] = Math.min(mi, grid[i][j]);
+        }
+    }
+    return ans;
+}
 ```
 
 <!-- tabs:end -->
diff --git a/solution/3100-3199/3148.Maximum Difference Score in a Grid/README_EN.md b/solution/3100-3199/3148.Maximum Difference Score in a Grid/README_EN.md
index 6714cbc3041b8..adb4e07ccf6ff 100644
--- a/solution/3100-3199/3148.Maximum Difference Score in a Grid/README_EN.md	
+++ b/solution/3100-3199/3148.Maximum Difference Score in a Grid/README_EN.md	
@@ -51,24 +51,136 @@ The total score is <code>2 + 7 = 9</code>.</p>
 
 ## Solutions
 
-### Solution 1
+### Solution 1: Dynamic Programming
+
+According to the problem description, if the values of the cells we pass through are $c_1, c_2, \cdots, c_k$, then our score is $c_2 - c_1 + c_3 - c_2 + \cdots + c_k - c_{k-1} = c_k - c_1$. Therefore, the problem is transformed into: for each cell $(i, j)$ of the matrix, if we take it as the endpoint, what is the minimum value of the starting point.
+
+We can use dynamic programming to solve this problem. We define $f[i][j]$ as the minimum value of the path with $(i, j)$ as the endpoint. Then we can get the state transition equation:
+
+$$
+f[i][j] = \min(f[i-1][j], f[i][j-1], grid[i][j])
+$$
+
+So the answer is the maximum value of $\text{grid}[i][j] - \min(f[i-1][j], f[i][j-1])$.
+
+The time complexity is $O(m \times n)$, and the space complexity is $O(m \times n)$. Where $m$ and $n$ are the number of rows and columns of the matrix, respectively.
 
 <!-- tabs:start -->
 
 ```python
-
+class Solution:
+    def maxScore(self, grid: List[List[int]]) -> int:
+        f = [[0] * len(grid[0]) for _ in range(len(grid))]
+        ans = -inf
+        for i, row in enumerate(grid):
+            for j, x in enumerate(row):
+                mi = inf
+                if i:
+                    mi = min(mi, f[i - 1][j])
+                if j:
+                    mi = min(mi, f[i][j - 1])
+                ans = max(ans, x - mi)
+                f[i][j] = min(x, mi)
+        return ans
 ```
 
 ```java
-
+class Solution {
+    public int maxScore(List<List<Integer>> grid) {
+        int m = grid.size(), n = grid.get(0).size();
+        final int inf = 1 << 30;
+        int ans = -inf;
+        int[][] f = new int[m][n];
+        for (int i = 0; i < m; ++i) {
+            for (int j = 0; j < n; ++j) {
+                int mi = inf;
+                if (i > 0) {
+                    mi = Math.min(mi, f[i - 1][j]);
+                }
+                if (j > 0) {
+                    mi = Math.min(mi, f[i][j - 1]);
+                }
+                ans = Math.max(ans, grid.get(i).get(j) - mi);
+                f[i][j] = Math.min(grid.get(i).get(j), mi);
+            }
+        }
+        return ans;
+    }
+}
 ```
 
 ```cpp
-
+class Solution {
+public:
+    int maxScore(vector<vector<int>>& grid) {
+        int m = grid.size(), n = grid[0].size();
+        const int inf = 1 << 30;
+        int ans = -inf;
+        int f[m][n];
+        for (int i = 0; i < m; ++i) {
+            for (int j = 0; j < n; ++j) {
+                int mi = inf;
+                if (i) {
+                    mi = min(mi, f[i - 1][j]);
+                }
+                if (j) {
+                    mi = min(mi, f[i][j - 1]);
+                }
+                ans = max(ans, grid[i][j] - mi);
+                f[i][j] = min(grid[i][j], mi);
+            }
+        }
+        return ans;
+    }
+};
 ```
 
 ```go
+func maxScore(grid [][]int) int {
+	m, n := len(grid), len(grid[0])
+	f := make([][]int, m)
+	for i := range f {
+		f[i] = make([]int, n)
+	}
+	const inf int = 1 << 30
+	ans := -inf
+	for i, row := range grid {
+		for j, x := range row {
+			mi := inf
+			if i > 0 {
+				mi = min(mi, f[i-1][j])
+			}
+			if j > 0 {
+				mi = min(mi, f[i][j-1])
+			}
+			ans = max(ans, x-mi)
+			f[i][j] = min(x, mi)
+		}
+	}
+	return ans
+}
+```
 
+```ts
+function maxScore(grid: number[][]): number {
+    const [m, n] = [grid.length, grid[0].length];
+    const f: number[][] = Array.from({ length: m }, () => Array.from({ length: n }, () => 0));
+    let ans = -Infinity;
+    for (let i = 0; i < m; ++i) {
+        for (let j = 0; j < n; ++j) {
+            let mi = Infinity;
+            if (i) {
+                mi = Math.min(mi, f[i - 1][j]);
+            }
+            if (j) {
+                mi = Math.min(mi, f[i][j - 1]);
+            }
+            ans = Math.max(ans, grid[i][j] - mi);
+            f[i][j] = Math.min(mi, grid[i][j]);
+        }
+    }
+    return ans;
+}
 ```
 
 <!-- tabs:end -->
diff --git a/solution/3100-3199/3148.Maximum Difference Score in a Grid/Solution.cpp b/solution/3100-3199/3148.Maximum Difference Score in a Grid/Solution.cpp
new file mode 100644
index 0000000000000..f5279402d1922
--- /dev/null
+++ b/solution/3100-3199/3148.Maximum Difference Score in a Grid/Solution.cpp	
@@ -0,0 +1,23 @@
+class Solution {
+public:
+    int maxScore(vector<vector<int>>& grid) {
+        int m = grid.size(), n = grid[0].size();
+        const int inf = 1 << 30;
+        int ans = -inf;
+        int f[m][n];
+        for (int i = 0; i < m; ++i) {
+            for (int j = 0; j < n; ++j) {
+                int mi = inf;
+                if (i) {
+                    mi = min(mi, f[i - 1][j]);
+                }
+                if (j) {
+                    mi = min(mi, f[i][j - 1]);
+                }
+                ans = max(ans, grid[i][j] - mi);
+                f[i][j] = min(grid[i][j], mi);
+            }
+        }
+        return ans;
+    }
+};
\ No newline at end of file
diff --git a/solution/3100-3199/3148.Maximum Difference Score in a Grid/Solution.go b/solution/3100-3199/3148.Maximum Difference Score in a Grid/Solution.go
new file mode 100644
index 0000000000000..1b5aa8874ca45
--- /dev/null
+++ b/solution/3100-3199/3148.Maximum Difference Score in a Grid/Solution.go	
@@ -0,0 +1,23 @@
+func maxScore(grid [][]int) int {
+	m, n := len(grid), len(grid[0])
+	f := make([][]int, m)
+	for i := range f {
+		f[i] = make([]int, n)
+	}
+	const inf int = 1 << 30
+	ans := -inf
+	for i, row := range grid {
+		for j, x := range row {
+			mi := inf
+			if i > 0 {
+				mi = min(mi, f[i-1][j])
+			}
+			if j > 0 {
+				mi = min(mi, f[i][j-1])
+			}
+			ans = max(ans, x-mi)
+			f[i][j] = min(x, mi)
+		}
+	}
+	return ans
+}
\ No newline at end of file
diff --git a/solution/3100-3199/3148.Maximum Difference Score in a Grid/Solution.java b/solution/3100-3199/3148.Maximum Difference Score in a Grid/Solution.java
new file mode 100644
index 0000000000000..6fc2cc0c7261c
--- /dev/null
+++ b/solution/3100-3199/3148.Maximum Difference Score in a Grid/Solution.java	
@@ -0,0 +1,22 @@
+class Solution {
+    public int maxScore(List<List<Integer>> grid) {
+        int m = grid.size(), n = grid.get(0).size();
+        final int inf = 1 << 30;
+        int ans = -inf;
+        int[][] f = new int[m][n];
+        for (int i = 0; i < m; ++i) {
+            for (int j = 0; j < n; ++j) {
+                int mi = inf;
+                if (i > 0) {
+                    mi = Math.min(mi, f[i - 1][j]);
+                }
+                if (j > 0) {
+                    mi = Math.min(mi, f[i][j - 1]);
+                }
+                ans = Math.max(ans, grid.get(i).get(j) - mi);
+                f[i][j] = Math.min(grid.get(i).get(j), mi);
+            }
+        }
+        return ans;
+    }
+}
\ No newline at end of file
diff --git a/solution/3100-3199/3148.Maximum Difference Score in a Grid/Solution.py b/solution/3100-3199/3148.Maximum Difference Score in a Grid/Solution.py
new file mode 100644
index 0000000000000..bb2ae285c3e6f
--- /dev/null
+++ b/solution/3100-3199/3148.Maximum Difference Score in a Grid/Solution.py	
@@ -0,0 +1,14 @@
+class Solution:
+    def maxScore(self, grid: List[List[int]]) -> int:
+        f = [[0] * len(grid[0]) for _ in range(len(grid))]
+        ans = -inf
+        for i, row in enumerate(grid):
+            for j, x in enumerate(row):
+                mi = inf
+                if i:
+                    mi = min(mi, f[i - 1][j])
+                if j:
+                    mi = min(mi, f[i][j - 1])
+                ans = max(ans, x - mi)
+                f[i][j] = min(x, mi)
+        return ans
diff --git a/solution/3100-3199/3148.Maximum Difference Score in a Grid/Solution.ts b/solution/3100-3199/3148.Maximum Difference Score in a Grid/Solution.ts
new file mode 100644
index 0000000000000..17bc7718bfb3a
--- /dev/null
+++ b/solution/3100-3199/3148.Maximum Difference Score in a Grid/Solution.ts	
@@ -0,0 +1,19 @@
+function maxScore(grid: number[][]): number {
+    const [m, n] = [grid.length, grid[0].length];
+    const f: number[][] = Array.from({ length: m }, () => Array.from({ length: n }, () => 0));
+    let ans = -Infinity;
+    for (let i = 0; i < m; ++i) {
+        for (let j = 0; j < n; ++j) {
+            let mi = Infinity;
+            if (i) {
+                mi = Math.min(mi, f[i - 1][j]);
+            }
+            if (j) {
+                mi = Math.min(mi, f[i][j - 1]);
+            }
+            ans = Math.max(ans, grid[i][j] - mi);
+            f[i][j] = Math.min(mi, grid[i][j]);
+        }
+    }
+    return ans;
+}

From 12cea18dac89ad659fa2c8104468049b90488102 Mon Sep 17 00:00:00 2001
From: burlinchen <chenbeiliuhuo@gmail.com>
Date: Mon, 13 May 2024 12:42:00 +0800
Subject: [PATCH 03/12] feat: add ts solution to lc problem: No.60 (#2801)

---
 .../0060.Permutation Sequence/README.md       | 25 +++++++++++++++++++
 .../0060.Permutation Sequence/README_EN.md    | 25 +++++++++++++++++++
 .../0060.Permutation Sequence/Solution.ts     | 22 ++++++++++++++++
 3 files changed, 72 insertions(+)
 create mode 100644 solution/0000-0099/0060.Permutation Sequence/Solution.ts

diff --git a/solution/0000-0099/0060.Permutation Sequence/README.md b/solution/0000-0099/0060.Permutation Sequence/README.md
index 2cde7391511b1..fb60e9b24865a 100644
--- a/solution/0000-0099/0060.Permutation Sequence/README.md	
+++ b/solution/0000-0099/0060.Permutation Sequence/README.md	
@@ -225,6 +225,31 @@ public class Solution {
 }
 ```
 
+```ts
+function getPermutation(n: number, k: number): string {
+    let ans = '';
+    const vis = Array.from({ length: n + 1 }, () => false);
+    for (let i = 0; i < n; i++) {
+        let fact = 1;
+        for (let j = 1; j < n - i; j++) {
+            fact *= j;
+        }
+        for (let j = 1; j <= n; j++) {
+            if (!vis[j]) {
+                if (k > fact) {
+                    k -= fact;
+                } else {
+                    ans += j;
+                    vis[j] = true;
+                    break;
+                }
+            }
+        }
+    }
+    return ans;
+}
+```
+
 <!-- tabs:end -->
 
 <!-- end -->
diff --git a/solution/0000-0099/0060.Permutation Sequence/README_EN.md b/solution/0000-0099/0060.Permutation Sequence/README_EN.md
index f24e140d671e1..b7faf21895925 100644
--- a/solution/0000-0099/0060.Permutation Sequence/README_EN.md	
+++ b/solution/0000-0099/0060.Permutation Sequence/README_EN.md	
@@ -210,6 +210,31 @@ public class Solution {
 }
 ```
 
+```ts
+function getPermutation(n: number, k: number): string {
+    let ans = '';
+    const vis = Array.from({ length: n + 1 }, () => false);
+    for (let i = 0; i < n; i++) {
+        let fact = 1;
+        for (let j = 1; j < n - i; j++) {
+            fact *= j;
+        }
+        for (let j = 1; j <= n; j++) {
+            if (!vis[j]) {
+                if (k > fact) {
+                    k -= fact;
+                } else {
+                    ans += j;
+                    vis[j] = true;
+                    break;
+                }
+            }
+        }
+    }
+    return ans;
+}
+```
+
 <!-- tabs:end -->
 
 <!-- end -->
diff --git a/solution/0000-0099/0060.Permutation Sequence/Solution.ts b/solution/0000-0099/0060.Permutation Sequence/Solution.ts
new file mode 100644
index 0000000000000..884f10399dc40
--- /dev/null
+++ b/solution/0000-0099/0060.Permutation Sequence/Solution.ts	
@@ -0,0 +1,22 @@
+function getPermutation(n: number, k: number): string {
+    let ans = '';
+    const vis = Array.from({ length: n + 1 }, () => false);
+    for (let i = 0; i < n; i++) {
+        let fact = 1;
+        for (let j = 1; j < n - i; j++) {
+            fact *= j;
+        }
+        for (let j = 1; j <= n; j++) {
+            if (!vis[j]) {
+                if (k > fact) {
+                    k -= fact;
+                } else {
+                    ans += j;
+                    vis[j] = true;
+                    break;
+                }
+            }
+        }
+    }
+    return ans;
+}

From 726d0bed238dcce24d70543301621e2b153fd5f7 Mon Sep 17 00:00:00 2001
From: Libin YANG <contact@yanglibin.info>
Date: Mon, 13 May 2024 14:15:07 +0800
Subject: [PATCH 04/12] feat: add solutions to lc problems: No.3150 (#2802)

No.3150.Invalid Tweets II
---
 .prettierignore                               |   3 +-
 .../2578.Split With Minimum Sum/README_EN.md  |   4 +-
 .../3150.Invalid Tweets II/README.md          | 107 ++++++++++++++++++
 .../3150.Invalid Tweets II/README_EN.md       | 105 +++++++++++++++++
 .../3150.Invalid Tweets II/Solution.py        |  10 ++
 .../3150.Invalid Tweets II/Solution.sql       |   7 ++
 solution/CONTEST_README.md                    |   4 +-
 solution/DATABASE_README.md                   |   1 +
 solution/DATABASE_README_EN.md                |   1 +
 solution/README.md                            |   1 +
 solution/README_EN.md                         |   1 +
 solution/contest.json                         |   2 +-
 12 files changed, 240 insertions(+), 6 deletions(-)
 create mode 100644 solution/3100-3199/3150.Invalid Tweets II/README.md
 create mode 100644 solution/3100-3199/3150.Invalid Tweets II/README_EN.md
 create mode 100644 solution/3100-3199/3150.Invalid Tweets II/Solution.py
 create mode 100644 solution/3100-3199/3150.Invalid Tweets II/Solution.sql

diff --git a/.prettierignore b/.prettierignore
index 761a3209faa0b..f76480ca0d15f 100644
--- a/.prettierignore
+++ b/.prettierignore
@@ -23,4 +23,5 @@ node_modules/
 /solution/2200-2299/2205.The Number of Users That Are Eligible for Discount/Solution.sql
 /solution/2200-2299/2230.The Users That Are Eligible for Discount/Solution.sql
 /solution/2200-2299/2252.Dynamic Pivoting of a Table/Solution.sql
-/solution/2200-2299/2253.Dynamic Unpivoting of a Table/Solution.sql
\ No newline at end of file
+/solution/2200-2299/2253.Dynamic Unpivoting of a Table/Solution.sql
+/solution/3100-3199/3150.Invalid Tweets II/Solution.sql
\ No newline at end of file
diff --git a/solution/2500-2599/2578.Split With Minimum Sum/README_EN.md b/solution/2500-2599/2578.Split With Minimum Sum/README_EN.md
index 6a8ff4b0afff4..9a34cc8300028 100644
--- a/solution/2500-2599/2578.Split With Minimum Sum/README_EN.md	
+++ b/solution/2500-2599/2578.Split With Minimum Sum/README_EN.md	
@@ -34,7 +34,7 @@
 <pre>
 <strong>Input:</strong> num = 4325
 <strong>Output:</strong> 59
-<strong>Explanation:</strong> We can split 4325 so that <code>num1 </code>is 24 and num2<code> is </code>35, giving a sum of 59. We can prove that 59 is indeed the minimal possible sum.
+<strong>Explanation:</strong> We can split 4325 so that <code>num1</code> is 24 and <code>num2</code> is 35, giving a sum of 59. We can prove that 59 is indeed the minimal possible sum.
 </pre>
 
 <p><strong class="example">Example 2:</strong></p>
@@ -42,7 +42,7 @@
 <pre>
 <strong>Input:</strong> num = 687
 <strong>Output:</strong> 75
-<strong>Explanation:</strong> We can split 687 so that <code>num1</code> is 68 and <code>num2 </code>is 7, which would give an optimal sum of 75.
+<strong>Explanation:</strong> We can split 687 so that <code>num1</code> is 68 and <code>num2</code> is 7, which would give an optimal sum of 75.
 </pre>
 
 <p>&nbsp;</p>
diff --git a/solution/3100-3199/3150.Invalid Tweets II/README.md b/solution/3100-3199/3150.Invalid Tweets II/README.md
new file mode 100644
index 0000000000000..25bd5e269d9f2
--- /dev/null
+++ b/solution/3100-3199/3150.Invalid Tweets II/README.md	
@@ -0,0 +1,107 @@
+# [3150. Invalid Tweets II 🔒](https://leetcode.cn/problems/invalid-tweets-ii)
+
+[English Version](/solution/3100-3199/3150.Invalid%20Tweets%20II/README_EN.md)
+
+<!-- tags: -->
+
+## 题目描述
+
+<!-- 这里写题目描述 -->
+
+<p>Table: <code>Tweets</code></p>
+
+<pre>
++----------------+---------+
+| Column Name    | Type    |
++----------------+---------+
+| tweet_id       | int     |
+| content        | varchar |
++----------------+---------+
+tweet_id is the primary key (column with unique values) for this table.
+This table contains all the tweets in a social media app.
+</pre>
+
+<p>Write a solution to find <strong>invalid tweets</strong>. A tweet is considered invalid if it meets <strong>any</strong> of the following criteria:</p>
+
+<ul>
+	<li>It exceeds <code>140</code> characters in length.</li>
+	<li>It has more than <code>3</code> mentions.</li>
+	<li>It includes more than <code><font face="monospace">3</font></code>&nbsp;hashtags.</li>
+</ul>
+
+<p>Return <em>the result table ordered by</em> <code>tweet_id</code> <em>in <strong>ascending</strong> order</em>.</p>
+
+<p>The result format is in the following example.</p>
+
+<p>&nbsp;</p>
+<p><strong>Example:</strong></p>
+
+<div class="example-block">
+<p><strong>Input:</strong></p>
+
+<p>Tweets table:</p>
+
+<pre class="example-io">
+  +----------+-----------------------------------------------------------------------------------+
+  | tweet_id | content                                                                           |
+  +----------+-----------------------------------------------------------------------------------+
+  | 1        | Traveling, exploring, and living my best life @JaneSmith @SaraJohnson @LisaTaylor |
+  |          | @MikeBrown #Foodie #Fitness #Learning                                             | 
+  | 2        | Just had the best dinner with friends! #Foodie #Friends #Fun                      |
+  | 4        | Working hard on my new project #Work #Goals #Productivity #Fun                    |
+  +----------+-----------------------------------------------------------------------------------+
+  </pre>
+
+<p><strong>Output:</strong></p>
+
+<pre class="example-io">
+  +----------+
+  | tweet_id |
+  +----------+
+  | 1        |
+  | 4        |
+  +----------+
+  </pre>
+
+<p><strong>Explanation:</strong></p>
+
+<ul>
+	<li>tweet_id&nbsp;1 contains 4&nbsp;mentions.</li>
+	<li>tweet_id 4 contains 4 hashtags.</li>
+</ul>
+Output table is ordered by tweet_id in ascending order.</div>
+
+## 解法
+
+### 方法一：LENGTH() 函数 + REPLACE() 函数
+
+我们可以使用 `LENGTH()` 函数计算字符串的长度，计算排除掉 `@` 或 `#` 之后的长度，然后使用 `OR` 运算符连接这三个条件，筛选出对应的 tweet_id，并按照 tweet_id 升序排序。
+
+<!-- tabs:start -->
+
+```sql
+# Write your MySQL query statement below
+SELECT tweet_id
+FROM Tweets
+WHERE LENGTH(content) > 140
+    OR (LENGTH(content) - LENGTH(REPLACE(content, '@', ''))) > 3
+    OR (LENGTH(content) - LENGTH(REPLACE(content, '#', ''))) > 3
+ORDER BY 1;
+```
+
+```python
+import pandas as pd
+
+
+def find_invalid_tweets(tweets: pd.DataFrame) -> pd.DataFrame:
+    invalid_tweets = tweets[
+        (tweets["content"].str.len() > 140)
+        | (tweets["content"].str.count("@") > 3)
+        | (tweets["content"].str.count("#") > 3)
+    ].sort_values(by="tweet_id")
+    return invalid_tweets[["tweet_id"]]
+```
+
+<!-- tabs:end -->
+
+<!-- end -->
diff --git a/solution/3100-3199/3150.Invalid Tweets II/README_EN.md b/solution/3100-3199/3150.Invalid Tweets II/README_EN.md
new file mode 100644
index 0000000000000..ab5ef9ce3fd9f
--- /dev/null
+++ b/solution/3100-3199/3150.Invalid Tweets II/README_EN.md	
@@ -0,0 +1,105 @@
+# [3150. Invalid Tweets II 🔒](https://leetcode.com/problems/invalid-tweets-ii)
+
+[中文文档](/solution/3100-3199/3150.Invalid%20Tweets%20II/README.md)
+
+<!-- tags: -->
+
+## Description
+
+<p>Table: <code>Tweets</code></p>
+
+<pre>
++----------------+---------+
+| Column Name    | Type    |
++----------------+---------+
+| tweet_id       | int     |
+| content        | varchar |
++----------------+---------+
+tweet_id is the primary key (column with unique values) for this table.
+This table contains all the tweets in a social media app.
+</pre>
+
+<p>Write a solution to find <strong>invalid tweets</strong>. A tweet is considered invalid if it meets <strong>any</strong> of the following criteria:</p>
+
+<ul>
+	<li>It exceeds <code>140</code> characters in length.</li>
+	<li>It has more than <code>3</code> mentions.</li>
+	<li>It includes more than <code><font face="monospace">3</font></code>&nbsp;hashtags.</li>
+</ul>
+
+<p>Return <em>the result table ordered by</em> <code>tweet_id</code> <em>in <strong>ascending</strong> order</em>.</p>
+
+<p>The result format is in the following example.</p>
+
+<p>&nbsp;</p>
+<p><strong>Example:</strong></p>
+
+<div class="example-block">
+<p><strong>Input:</strong></p>
+
+<p>Tweets table:</p>
+
+<pre class="example-io">
+  +----------+-----------------------------------------------------------------------------------+
+  | tweet_id | content                                                                           |
+  +----------+-----------------------------------------------------------------------------------+
+  | 1        | Traveling, exploring, and living my best life @JaneSmith @SaraJohnson @LisaTaylor |
+  |          | @MikeBrown #Foodie #Fitness #Learning                                             | 
+  | 2        | Just had the best dinner with friends! #Foodie #Friends #Fun                      |
+  | 4        | Working hard on my new project #Work #Goals #Productivity #Fun                    |
+  +----------+-----------------------------------------------------------------------------------+
+  </pre>
+
+<p><strong>Output:</strong></p>
+
+<pre class="example-io">
+  +----------+
+  | tweet_id |
+  +----------+
+  | 1        |
+  | 4        |
+  +----------+
+  </pre>
+
+<p><strong>Explanation:</strong></p>
+
+<ul>
+	<li>tweet_id&nbsp;1 contains 4&nbsp;mentions.</li>
+	<li>tweet_id 4 contains 4 hashtags.</li>
+</ul>
+Output table is ordered by tweet_id in ascending order.</div>
+
+## Solutions
+
+### Solution 1: LENGTH() Function + REPLACE() Function
+
+We can use the `LENGTH()` function to calculate the length of the string, calculate the length after excluding `@` or `#`, then use the `OR` operator to connect these three conditions, filter out the corresponding tweet_id, and sort by tweet_id in ascending order.
+
+<!-- tabs:start -->
+
+```sql
+# Write your MySQL query statement below
+SELECT tweet_id
+FROM Tweets
+WHERE LENGTH(content) > 140
+    OR (LENGTH(content) - LENGTH(REPLACE(content, '@', ''))) > 3
+    OR (LENGTH(content) - LENGTH(REPLACE(content, '#', ''))) > 3
+ORDER BY 1;
+```
+
+```python
+import pandas as pd
+
+
+def find_invalid_tweets(tweets: pd.DataFrame) -> pd.DataFrame:
+    invalid_tweets = tweets[
+        (tweets["content"].str.len() > 140)
+        | (tweets["content"].str.count("@") > 3)
+        | (tweets["content"].str.count("#") > 3)
+    ].sort_values(by="tweet_id")
+    return invalid_tweets[["tweet_id"]]
+```
+
+<!-- tabs:end -->
+
+<!-- end -->
diff --git a/solution/3100-3199/3150.Invalid Tweets II/Solution.py b/solution/3100-3199/3150.Invalid Tweets II/Solution.py
new file mode 100644
index 0000000000000..41a454b61d2cf
--- /dev/null
+++ b/solution/3100-3199/3150.Invalid Tweets II/Solution.py	
@@ -0,0 +1,10 @@
+import pandas as pd
+
+
+def find_invalid_tweets(tweets: pd.DataFrame) -> pd.DataFrame:
+    invalid_tweets = tweets[
+        (tweets["content"].str.len() > 140)
+        | (tweets["content"].str.count("@") > 3)
+        | (tweets["content"].str.count("#") > 3)
+    ].sort_values(by="tweet_id")
+    return invalid_tweets[["tweet_id"]]
diff --git a/solution/3100-3199/3150.Invalid Tweets II/Solution.sql b/solution/3100-3199/3150.Invalid Tweets II/Solution.sql
new file mode 100644
index 0000000000000..7b8b1deb34639
--- /dev/null
+++ b/solution/3100-3199/3150.Invalid Tweets II/Solution.sql	
@@ -0,0 +1,7 @@
+# Write your MySQL query statement below
+SELECT tweet_id
+FROM Tweets
+WHERE LENGTH(content) > 140
+    OR (LENGTH(content) - LENGTH(REPLACE(content, '@', ''))) > 3
+    OR (LENGTH(content) - LENGTH(REPLACE(content, '#', ''))) > 3
+ORDER BY 1;
diff --git a/solution/CONTEST_README.md b/solution/CONTEST_README.md
index 16b75349b90c8..be5635bcee55d 100644
--- a/solution/CONTEST_README.md
+++ b/solution/CONTEST_README.md
@@ -29,7 +29,7 @@
 - [3148. 矩阵中的最大得分](/solution/3100-3199/3148.Maximum%20Difference%20Score%20in%20a%20Grid/README.md)
 - [3149. 找出分数最低的排列](/solution/3100-3199/3149.Find%20the%20Minimum%20Cost%20Array%20Permutation/README.md)
 
-#### 第 130 场双周赛(2024-05-11 22:30, 90 分钟) 参赛人数 2603
+#### 第 130 场双周赛(2024-05-11 22:30, 90 分钟) 参赛人数 2604
 
 - [3142. 判断矩阵是否满足条件](/solution/3100-3199/3142.Check%20if%20Grid%20Satisfies%20Conditions/README.md)
 - [3143. 正方形中的最多点数](/solution/3100-3199/3143.Maximum%20Points%20Inside%20the%20Square/README.md)
@@ -2073,7 +2073,7 @@
 - [1558. 得到目标数组的最少函数调用次数](/solution/1500-1599/1558.Minimum%20Numbers%20of%20Function%20Calls%20to%20Make%20Target%20Array/README.md)
 - [1559. 二维网格图中探测环](/solution/1500-1599/1559.Detect%20Cycles%20in%202D%20Grid/README.md)
 
-#### 第 202 场周赛(2020-08-16 10:30, 90 分钟) 参赛人数 4989
+#### 第 202 场周赛(2020-08-16 10:30, 90 分钟) 参赛人数 4990
 
 - [1550. 存在连续三个奇数的数组](/solution/1500-1599/1550.Three%20Consecutive%20Odds/README.md)
 - [1551. 使数组中所有元素相等的最小操作数](/solution/1500-1599/1551.Minimum%20Operations%20to%20Make%20Array%20Equal/README.md)
diff --git a/solution/DATABASE_README.md b/solution/DATABASE_README.md
index 557c95f5c318d..a35b92bb16b42 100644
--- a/solution/DATABASE_README.md
+++ b/solution/DATABASE_README.md
@@ -278,6 +278,7 @@
 | 3124 | [查找最长的电话](/solution/3100-3199/3124.Find%20Longest%20Calls/README.md)                                                                                  | `数据库` | 中等 | 🔒   |
 | 3126 | [Server Utilization Time](/solution/3100-3199/3126.Server%20Utilization%20Time/README.md)                                                                    | `数据库` | 中等 | 🔒   |
 | 3140 | [连续空余座位 II](/solution/3100-3199/3140.Consecutive%20Available%20Seats%20II/README.md)                                                                   | `数据库` | 中等 | 🔒   |
+| 3150 | [Invalid Tweets II](/solution/3100-3199/3150.Invalid%20Tweets%20II/README.md)                                                                                |          | 简单 | 🔒   |
 
 ## 版权
 
diff --git a/solution/DATABASE_README_EN.md b/solution/DATABASE_README_EN.md
index 533d4c885deab..833c7663ed76f 100644
--- a/solution/DATABASE_README_EN.md
+++ b/solution/DATABASE_README_EN.md
@@ -276,6 +276,7 @@ Press <kbd>Control</kbd> + <kbd>F</kbd>(or <kbd>Command</kbd> + <kbd>F</kbd> on
 | 3124 | [Find Longest Calls](/solution/3100-3199/3124.Find%20Longest%20Calls/README_EN.md)                                                                                                           | `Database` | Medium     | 🔒     |
 | 3126 | [Server Utilization Time](/solution/3100-3199/3126.Server%20Utilization%20Time/README_EN.md)                                                                                                 | `Database` | Medium     | 🔒     |
 | 3140 | [Consecutive Available Seats II](/solution/3100-3199/3140.Consecutive%20Available%20Seats%20II/README_EN.md)                                                                                 | `Database` | Medium     | 🔒     |
+| 3150 | [Invalid Tweets II](/solution/3100-3199/3150.Invalid%20Tweets%20II/README_EN.md)                                                                                                             |            | Easy       | 🔒     |
 
 ## Copyright
 
diff --git a/solution/README.md b/solution/README.md
index 295b7f42223e2..80b3f1df013b0 100644
--- a/solution/README.md
+++ b/solution/README.md
@@ -3160,6 +3160,7 @@
 |  3147  |  [从魔法师身上吸取的最大能量](/solution/3100-3199/3147.Taking%20Maximum%20Energy%20From%20the%20Mystic%20Dungeon/README.md)  |    |  中等  |  第 397 场周赛  |
 |  3148  |  [矩阵中的最大得分](/solution/3100-3199/3148.Maximum%20Difference%20Score%20in%20a%20Grid/README.md)  |    |  中等  |  第 397 场周赛  |
 |  3149  |  [找出分数最低的排列](/solution/3100-3199/3149.Find%20the%20Minimum%20Cost%20Array%20Permutation/README.md)  |    |  困难  |  第 397 场周赛  |
+|  3150  |  [Invalid Tweets II](/solution/3100-3199/3150.Invalid%20Tweets%20II/README.md)  |    |  简单  |  🔒  |
 
 ## 版权
 
diff --git a/solution/README_EN.md b/solution/README_EN.md
index 2c4e9715ba814..71946e9f5746c 100644
--- a/solution/README_EN.md
+++ b/solution/README_EN.md
@@ -3158,6 +3158,7 @@ Press <kbd>Control</kbd> + <kbd>F</kbd>(or <kbd>Command</kbd> + <kbd>F</kbd> on
 |  3147  |  [Taking Maximum Energy From the Mystic Dungeon](/solution/3100-3199/3147.Taking%20Maximum%20Energy%20From%20the%20Mystic%20Dungeon/README_EN.md)  |    |  Medium  |  Weekly Contest 397  |
 |  3148  |  [Maximum Difference Score in a Grid](/solution/3100-3199/3148.Maximum%20Difference%20Score%20in%20a%20Grid/README_EN.md)  |    |  Medium  |  Weekly Contest 397  |
 |  3149  |  [Find the Minimum Cost Array Permutation](/solution/3100-3199/3149.Find%20the%20Minimum%20Cost%20Array%20Permutation/README_EN.md)  |    |  Hard  |  Weekly Contest 397  |
+|  3150  |  [Invalid Tweets II](/solution/3100-3199/3150.Invalid%20Tweets%20II/README_EN.md)  |    |  Easy  |  🔒  |
 
 ## Copyright
 
diff --git a/solution/contest.json b/solution/contest.json
index 7091e081e6805..3ee2a5b8c140e 100644
--- a/solution/contest.json
+++ b/solution/contest.json
@@ -1 +1 @@
-[{"contest_title": "\u7b2c 83 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 83", "contest_title_slug": "weekly-contest-83", "contest_id": 5, "contest_start_time": 1525570200, "contest_duration": 5400, "user_num": 58, "question_slugs": ["positions-of-large-groups", "masking-personal-information", "consecutive-numbers-sum", "count-unique-characters-of-all-substrings-of-a-given-string"]}, {"contest_title": "\u7b2c 84 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 84", "contest_title_slug": "weekly-contest-84", "contest_id": 6, "contest_start_time": 1526175000, "contest_duration": 5400, "user_num": 656, "question_slugs": ["flipping-an-image", "find-and-replace-in-string", "image-overlap", "sum-of-distances-in-tree"]}, {"contest_title": "\u7b2c 85 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 85", "contest_title_slug": "weekly-contest-85", "contest_id": 7, "contest_start_time": 1526779800, "contest_duration": 5400, "user_num": 467, "question_slugs": ["rectangle-overlap", "push-dominoes", "new-21-game", "similar-string-groups"]}, {"contest_title": "\u7b2c 86 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 86", "contest_title_slug": "weekly-contest-86", "contest_id": 8, "contest_start_time": 1527384600, "contest_duration": 5400, "user_num": 377, "question_slugs": ["magic-squares-in-grid", "keys-and-rooms", "split-array-into-fibonacci-sequence", "guess-the-word"]}, {"contest_title": "\u7b2c 87 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 87", "contest_title_slug": "weekly-contest-87", "contest_id": 9, "contest_start_time": 1527989400, "contest_duration": 5400, "user_num": 343, "question_slugs": ["backspace-string-compare", "longest-mountain-in-array", "hand-of-straights", "shortest-path-visiting-all-nodes"]}, {"contest_title": "\u7b2c 88 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 88", "contest_title_slug": "weekly-contest-88", "contest_id": 11, "contest_start_time": 1528594200, "contest_duration": 5400, "user_num": 404, "question_slugs": ["shifting-letters", "maximize-distance-to-closest-person", "loud-and-rich", "rectangle-area-ii"]}, {"contest_title": "\u7b2c 89 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 89", "contest_title_slug": "weekly-contest-89", "contest_id": 12, "contest_start_time": 1529199000, "contest_duration": 5400, "user_num": 491, "question_slugs": ["peak-index-in-a-mountain-array", "car-fleet", "exam-room", "k-similar-strings"]}, {"contest_title": "\u7b2c 90 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 90", "contest_title_slug": "weekly-contest-90", "contest_id": 13, "contest_start_time": 1529803800, "contest_duration": 5400, "user_num": 573, "question_slugs": ["buddy-strings", "score-of-parentheses", "mirror-reflection", "minimum-cost-to-hire-k-workers"]}, {"contest_title": "\u7b2c 91 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 91", "contest_title_slug": "weekly-contest-91", "contest_id": 14, "contest_start_time": 1530408600, "contest_duration": 5400, "user_num": 578, "question_slugs": ["lemonade-change", "all-nodes-distance-k-in-binary-tree", "score-after-flipping-matrix", "shortest-subarray-with-sum-at-least-k"]}, {"contest_title": "\u7b2c 92 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 92", "contest_title_slug": "weekly-contest-92", "contest_id": 15, "contest_start_time": 1531013400, "contest_duration": 5400, "user_num": 610, "question_slugs": ["transpose-matrix", "smallest-subtree-with-all-the-deepest-nodes", "prime-palindrome", "shortest-path-to-get-all-keys"]}, {"contest_title": "\u7b2c 93 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 93", "contest_title_slug": "weekly-contest-93", "contest_id": 16, "contest_start_time": 1531618200, "contest_duration": 5400, "user_num": 732, "question_slugs": ["binary-gap", "reordered-power-of-2", "advantage-shuffle", "minimum-number-of-refueling-stops"]}, {"contest_title": "\u7b2c 94 \u573a\u5468\u8d5b", "contest_title_en": "Weekly 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{"contest_title": "\u7b2c 97 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 97", "contest_title_slug": "weekly-contest-97", "contest_id": 20, "contest_start_time": 1534037400, "contest_duration": 5400, "user_num": 635, "question_slugs": ["uncommon-words-from-two-sentences", "spiral-matrix-iii", "possible-bipartition", "super-egg-drop"]}, {"contest_title": "\u7b2c 98 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 98", "contest_title_slug": "weekly-contest-98", "contest_id": 21, "contest_start_time": 1534642200, "contest_duration": 5400, "user_num": 670, "question_slugs": ["fair-candy-swap", "find-and-replace-pattern", "construct-binary-tree-from-preorder-and-postorder-traversal", "sum-of-subsequence-widths"]}, {"contest_title": "\u7b2c 99 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 99", "contest_title_slug": "weekly-contest-99", "contest_id": 22, "contest_start_time": 1535247000, "contest_duration": 5400, "user_num": 725, "question_slugs": ["surface-area-of-3d-shapes", "groups-of-special-equivalent-strings", "all-possible-full-binary-trees", "maximum-frequency-stack"]}, {"contest_title": "\u7b2c 100 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 100", "contest_title_slug": "weekly-contest-100", "contest_id": 23, "contest_start_time": 1535851800, "contest_duration": 5400, "user_num": 718, "question_slugs": ["monotonic-array", "increasing-order-search-tree", "bitwise-ors-of-subarrays", "orderly-queue"]}, {"contest_title": "\u7b2c 101 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 101", "contest_title_slug": "weekly-contest-101", "contest_id": 24, "contest_start_time": 1536456600, "contest_duration": 6300, "user_num": 854, "question_slugs": ["rle-iterator", "online-stock-span", "numbers-at-most-n-given-digit-set", "valid-permutations-for-di-sequence"]}, {"contest_title": "\u7b2c 102 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 102", "contest_title_slug": "weekly-contest-102", "contest_id": 25, "contest_start_time": 1537061400, "contest_duration": 5400, "user_num": 660, "question_slugs": ["sort-array-by-parity", "fruit-into-baskets", "sum-of-subarray-minimums", "super-palindromes"]}, {"contest_title": "\u7b2c 103 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 103", "contest_title_slug": "weekly-contest-103", "contest_id": 26, "contest_start_time": 1537666200, "contest_duration": 5400, "user_num": 575, "question_slugs": ["smallest-range-i", "snakes-and-ladders", "smallest-range-ii", "online-election"]}, {"contest_title": "\u7b2c 104 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 104", "contest_title_slug": "weekly-contest-104", "contest_id": 27, "contest_start_time": 1538271000, "contest_duration": 5400, "user_num": 354, "question_slugs": ["x-of-a-kind-in-a-deck-of-cards", "partition-array-into-disjoint-intervals", "word-subsets", "cat-and-mouse"]}, {"contest_title": "\u7b2c 105 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 105", 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["reorder-data-in-log-files", "range-sum-of-bst", "minimum-area-rectangle", "distinct-subsequences-ii"]}, {"contest_title": "\u7b2c 111 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 111", "contest_title_slug": "weekly-contest-111", "contest_id": 34, "contest_start_time": 1542508200, "contest_duration": 5400, "user_num": 353, "question_slugs": ["valid-mountain-array", "delete-columns-to-make-sorted", "di-string-match", "find-the-shortest-superstring"]}, {"contest_title": "\u7b2c 112 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 112", "contest_title_slug": "weekly-contest-112", "contest_id": 35, "contest_start_time": 1543113000, "contest_duration": 5400, "user_num": 299, "question_slugs": ["minimum-increment-to-make-array-unique", "validate-stack-sequences", "most-stones-removed-with-same-row-or-column", "bag-of-tokens"]}, {"contest_title": "\u7b2c 113 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 113", "contest_title_slug": "weekly-contest-113", 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"delete-columns-to-make-sorted-iii"]}, {"contest_title": "\u7b2c 116 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 116", "contest_title_slug": "weekly-contest-116", "contest_id": 39, "contest_start_time": 1545532200, "contest_duration": 5400, "user_num": 369, "question_slugs": ["n-repeated-element-in-size-2n-array", "maximum-width-ramp", "minimum-area-rectangle-ii", "least-operators-to-express-number"]}, {"contest_title": "\u7b2c 117 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 117", "contest_title_slug": "weekly-contest-117", "contest_id": 41, "contest_start_time": 1546137000, "contest_duration": 5400, "user_num": 657, "question_slugs": ["univalued-binary-tree", "numbers-with-same-consecutive-differences", "vowel-spellchecker", "binary-tree-cameras"]}, {"contest_title": "\u7b2c 118 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 118", "contest_title_slug": "weekly-contest-118", "contest_id": 42, "contest_start_time": 1546741800, "contest_duration": 5400, "user_num": 383, "question_slugs": ["powerful-integers", "pancake-sorting", "flip-binary-tree-to-match-preorder-traversal", "equal-rational-numbers"]}, {"contest_title": "\u7b2c 119 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 119", "contest_title_slug": "weekly-contest-119", "contest_id": 43, "contest_start_time": 1547346600, "contest_duration": 5400, "user_num": 513, "question_slugs": ["k-closest-points-to-origin", "largest-perimeter-triangle", "subarray-sums-divisible-by-k", "odd-even-jump"]}, {"contest_title": "\u7b2c 120 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 120", "contest_title_slug": "weekly-contest-120", "contest_id": 44, "contest_start_time": 1547951400, "contest_duration": 5400, "user_num": 382, "question_slugs": ["squares-of-a-sorted-array", "longest-turbulent-subarray", "distribute-coins-in-binary-tree", "unique-paths-iii"]}, {"contest_title": "\u7b2c 121 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 121", 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"contest_id": 56, "contest_start_time": 1554604200, "contest_duration": 5400, "user_num": 918, "question_slugs": ["remove-outermost-parentheses", "sum-of-root-to-leaf-binary-numbers", "camelcase-matching", "video-stitching"]}, {"contest_title": "\u7b2c 132 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 132", "contest_title_slug": "weekly-contest-132", "contest_id": 57, "contest_start_time": 1555209000, "contest_duration": 5400, "user_num": 1049, "question_slugs": ["divisor-game", "maximum-difference-between-node-and-ancestor", "longest-arithmetic-subsequence", "recover-a-tree-from-preorder-traversal"]}, {"contest_title": "\u7b2c 133 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 133", "contest_title_slug": "weekly-contest-133", "contest_id": 59, "contest_start_time": 1555813800, "contest_duration": 5400, "user_num": 999, "question_slugs": ["two-city-scheduling", "matrix-cells-in-distance-order", "maximum-sum-of-two-non-overlapping-subarrays", 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790, "question_slugs": ["robot-bounded-in-circle", "flower-planting-with-no-adjacent", "partition-array-for-maximum-sum", "longest-duplicate-substring"]}, {"contest_title": "\u7b2c 137 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 137", "contest_title_slug": "weekly-contest-137", "contest_id": 67, "contest_start_time": 1558233000, "contest_duration": 5400, "user_num": 766, "question_slugs": ["last-stone-weight", "remove-all-adjacent-duplicates-in-string", "longest-string-chain", "last-stone-weight-ii"]}, {"contest_title": "\u7b2c 138 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 138", "contest_title_slug": "weekly-contest-138", "contest_id": 68, "contest_start_time": 1558837800, "contest_duration": 5400, "user_num": 752, "question_slugs": ["height-checker", "grumpy-bookstore-owner", "previous-permutation-with-one-swap", "distant-barcodes"]}, {"contest_title": "\u7b2c 139 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 139", "contest_title_slug": 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"user_num": 1351, "question_slugs": ["day-of-the-year", "number-of-dice-rolls-with-target-sum", "swap-for-longest-repeated-character-substring", "online-majority-element-in-subarray"]}, {"contest_title": "\u7b2c 150 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 150", "contest_title_slug": "weekly-contest-150", "contest_id": 96, "contest_start_time": 1566095400, "contest_duration": 5400, "user_num": 1473, "question_slugs": ["find-words-that-can-be-formed-by-characters", "maximum-level-sum-of-a-binary-tree", "as-far-from-land-as-possible", "last-substring-in-lexicographical-order"]}, {"contest_title": "\u7b2c 151 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 151", "contest_title_slug": "weekly-contest-151", "contest_id": 98, "contest_start_time": 1566700200, "contest_duration": 5400, "user_num": 1341, "question_slugs": ["invalid-transactions", "compare-strings-by-frequency-of-the-smallest-character", "remove-zero-sum-consecutive-nodes-from-linked-list", 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5400, "user_num": 1299, "question_slugs": ["maximum-number-of-balloons", "reverse-substrings-between-each-pair-of-parentheses", "k-concatenation-maximum-sum", "critical-connections-in-a-network"]}, {"contest_title": "\u7b2c 155 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 155", "contest_title_slug": "weekly-contest-155", "contest_id": 107, "contest_start_time": 1569119400, "contest_duration": 5400, "user_num": 1603, "question_slugs": ["minimum-absolute-difference", "ugly-number-iii", "smallest-string-with-swaps", "sort-items-by-groups-respecting-dependencies"]}, {"contest_title": "\u7b2c 156 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 156", "contest_title_slug": "weekly-contest-156", "contest_id": 113, "contest_start_time": 1569724200, "contest_duration": 5400, "user_num": 1433, "question_slugs": ["unique-number-of-occurrences", "get-equal-substrings-within-budget", "remove-all-adjacent-duplicates-in-string-ii", "minimum-moves-to-reach-target-with-rotations"]}, {"contest_title": "\u7b2c 157 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 157", "contest_title_slug": "weekly-contest-157", "contest_id": 114, "contest_start_time": 1570329000, "contest_duration": 5400, "user_num": 1217, "question_slugs": ["minimum-cost-to-move-chips-to-the-same-position", "longest-arithmetic-subsequence-of-given-difference", "path-with-maximum-gold", "count-vowels-permutation"]}, {"contest_title": "\u7b2c 158 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 158", "contest_title_slug": "weekly-contest-158", "contest_id": 116, "contest_start_time": 1570933800, "contest_duration": 5400, "user_num": 1716, "question_slugs": ["split-a-string-in-balanced-strings", "queens-that-can-attack-the-king", "dice-roll-simulation", "maximum-equal-frequency"]}, {"contest_title": "\u7b2c 159 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 159", "contest_title_slug": "weekly-contest-159", "contest_id": 117, "contest_start_time": 1571538600, "contest_duration": 5400, "user_num": 1634, "question_slugs": ["check-if-it-is-a-straight-line", "remove-sub-folders-from-the-filesystem", "replace-the-substring-for-balanced-string", "maximum-profit-in-job-scheduling"]}, {"contest_title": "\u7b2c 160 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 160", "contest_title_slug": "weekly-contest-160", "contest_id": 119, "contest_start_time": 1572143400, "contest_duration": 5400, "user_num": 1692, "question_slugs": ["find-positive-integer-solution-for-a-given-equation", "circular-permutation-in-binary-representation", "maximum-length-of-a-concatenated-string-with-unique-characters", "tiling-a-rectangle-with-the-fewest-squares"]}, {"contest_title": "\u7b2c 161 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 161", "contest_title_slug": "weekly-contest-161", "contest_id": 120, "contest_start_time": 1572748200, "contest_duration": 5400, "user_num": 1610, "question_slugs": ["minimum-swaps-to-make-strings-equal", 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"question_slugs": ["subtract-the-product-and-sum-of-digits-of-an-integer", "group-the-people-given-the-group-size-they-belong-to", "find-the-smallest-divisor-given-a-threshold", "minimum-number-of-flips-to-convert-binary-matrix-to-zero-matrix"]}, {"contest_title": "\u7b2c 167 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 167", "contest_title_slug": "weekly-contest-167", "contest_id": 131, "contest_start_time": 1576377000, "contest_duration": 5400, "user_num": 1537, "question_slugs": ["convert-binary-number-in-a-linked-list-to-integer", "sequential-digits", "maximum-side-length-of-a-square-with-sum-less-than-or-equal-to-threshold", "shortest-path-in-a-grid-with-obstacles-elimination"]}, {"contest_title": "\u7b2c 168 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 168", "contest_title_slug": "weekly-contest-168", "contest_id": 133, "contest_start_time": 1576981800, "contest_duration": 5400, "user_num": 1553, "question_slugs": ["find-numbers-with-even-number-of-digits", "divide-array-in-sets-of-k-consecutive-numbers", "maximum-number-of-occurrences-of-a-substring", "maximum-candies-you-can-get-from-boxes"]}, {"contest_title": "\u7b2c 169 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 169", "contest_title_slug": "weekly-contest-169", "contest_id": 134, "contest_start_time": 1577586600, "contest_duration": 5400, "user_num": 1568, "question_slugs": ["find-n-unique-integers-sum-up-to-zero", "all-elements-in-two-binary-search-trees", "jump-game-iii", "verbal-arithmetic-puzzle"]}, {"contest_title": "\u7b2c 170 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 170", "contest_title_slug": "weekly-contest-170", "contest_id": 136, "contest_start_time": 1578191400, "contest_duration": 5400, "user_num": 1649, "question_slugs": ["decrypt-string-from-alphabet-to-integer-mapping", "xor-queries-of-a-subarray", "get-watched-videos-by-your-friends", "minimum-insertion-steps-to-make-a-string-palindrome"]}, {"contest_title": "\u7b2c 171 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 171", "contest_title_slug": "weekly-contest-171", "contest_id": 137, "contest_start_time": 1578796200, "contest_duration": 5400, "user_num": 1708, "question_slugs": ["convert-integer-to-the-sum-of-two-no-zero-integers", "minimum-flips-to-make-a-or-b-equal-to-c", "number-of-operations-to-make-network-connected", "minimum-distance-to-type-a-word-using-two-fingers"]}, {"contest_title": "\u7b2c 172 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 172", "contest_title_slug": "weekly-contest-172", "contest_id": 139, "contest_start_time": 1579401000, "contest_duration": 5400, "user_num": 1415, "question_slugs": ["maximum-69-number", "print-words-vertically", "delete-leaves-with-a-given-value", "minimum-number-of-taps-to-open-to-water-a-garden"]}, {"contest_title": "\u7b2c 173 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 173", "contest_title_slug": "weekly-contest-173", "contest_id": 142, "contest_start_time": 1580005800, "contest_duration": 5400, "user_num": 1072, "question_slugs": ["remove-palindromic-subsequences", "filter-restaurants-by-vegan-friendly-price-and-distance", "find-the-city-with-the-smallest-number-of-neighbors-at-a-threshold-distance", "minimum-difficulty-of-a-job-schedule"]}, {"contest_title": "\u7b2c 174 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 174", "contest_title_slug": "weekly-contest-174", "contest_id": 144, "contest_start_time": 1580610600, "contest_duration": 5400, "user_num": 1660, "question_slugs": ["the-k-weakest-rows-in-a-matrix", "reduce-array-size-to-the-half", "maximum-product-of-splitted-binary-tree", "jump-game-v"]}, {"contest_title": "\u7b2c 175 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 175", "contest_title_slug": "weekly-contest-175", "contest_id": 145, "contest_start_time": 1581215400, "contest_duration": 5400, "user_num": 2048, "question_slugs": ["check-if-n-and-its-double-exist", "minimum-number-of-steps-to-make-two-strings-anagram", "tweet-counts-per-frequency", "maximum-students-taking-exam"]}, {"contest_title": "\u7b2c 176 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 176", "contest_title_slug": "weekly-contest-176", "contest_id": 147, "contest_start_time": 1581820200, "contest_duration": 5400, "user_num": 2410, "question_slugs": ["count-negative-numbers-in-a-sorted-matrix", "product-of-the-last-k-numbers", "maximum-number-of-events-that-can-be-attended", "construct-target-array-with-multiple-sums"]}, {"contest_title": "\u7b2c 177 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 177", "contest_title_slug": "weekly-contest-177", "contest_id": 148, "contest_start_time": 1582425000, "contest_duration": 5400, "user_num": 2986, "question_slugs": ["number-of-days-between-two-dates", "validate-binary-tree-nodes", "closest-divisors", "largest-multiple-of-three"]}, {"contest_title": "\u7b2c 178 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 178", "contest_title_slug": "weekly-contest-178", "contest_id": 154, "contest_start_time": 1583029800, "contest_duration": 5400, "user_num": 3305, "question_slugs": ["how-many-numbers-are-smaller-than-the-current-number", "rank-teams-by-votes", "linked-list-in-binary-tree", "minimum-cost-to-make-at-least-one-valid-path-in-a-grid"]}, {"contest_title": "\u7b2c 179 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 179", "contest_title_slug": "weekly-contest-179", "contest_id": 156, "contest_start_time": 1583634600, "contest_duration": 5400, "user_num": 3606, "question_slugs": ["generate-a-string-with-characters-that-have-odd-counts", "number-of-times-binary-string-is-prefix-aligned", "time-needed-to-inform-all-employees", "frog-position-after-t-seconds"]}, {"contest_title": "\u7b2c 180 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 180", "contest_title_slug": "weekly-contest-180", "contest_id": 160, "contest_start_time": 1584239400, "contest_duration": 5400, "user_num": 3715, "question_slugs": ["lucky-numbers-in-a-matrix", "design-a-stack-with-increment-operation", "balance-a-binary-search-tree", "maximum-performance-of-a-team"]}, {"contest_title": "\u7b2c 181 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 181", "contest_title_slug": "weekly-contest-181", "contest_id": 162, "contest_start_time": 1584844200, "contest_duration": 5400, "user_num": 4149, "question_slugs": ["create-target-array-in-the-given-order", "four-divisors", "check-if-there-is-a-valid-path-in-a-grid", "longest-happy-prefix"]}, {"contest_title": "\u7b2c 182 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 182", "contest_title_slug": "weekly-contest-182", "contest_id": 166, "contest_start_time": 1585449000, "contest_duration": 5400, "user_num": 3911, "question_slugs": ["find-lucky-integer-in-an-array", "count-number-of-teams", "design-underground-system", "find-all-good-strings"]}, {"contest_title": "\u7b2c 183 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 183", "contest_title_slug": "weekly-contest-183", "contest_id": 168, "contest_start_time": 1586053800, "contest_duration": 5400, "user_num": 3756, "question_slugs": ["minimum-subsequence-in-non-increasing-order", "number-of-steps-to-reduce-a-number-in-binary-representation-to-one", "longest-happy-string", "stone-game-iii"]}, {"contest_title": "\u7b2c 184 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 184", "contest_title_slug": "weekly-contest-184", "contest_id": 175, "contest_start_time": 1586658600, "contest_duration": 5400, "user_num": 3847, "question_slugs": ["string-matching-in-an-array", "queries-on-a-permutation-with-key", "html-entity-parser", "number-of-ways-to-paint-n-3-grid"]}, {"contest_title": "\u7b2c 185 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 185", "contest_title_slug": "weekly-contest-185", "contest_id": 177, "contest_start_time": 1587263400, "contest_duration": 5400, "user_num": 5004, "question_slugs": ["reformat-the-string", "display-table-of-food-orders-in-a-restaurant", "minimum-number-of-frogs-croaking", "build-array-where-you-can-find-the-maximum-exactly-k-comparisons"]}, {"contest_title": "\u7b2c 186 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 186", "contest_title_slug": "weekly-contest-186", "contest_id": 185, "contest_start_time": 1587868200, "contest_duration": 5400, "user_num": 3108, "question_slugs": ["maximum-score-after-splitting-a-string", "maximum-points-you-can-obtain-from-cards", "diagonal-traverse-ii", "constrained-subsequence-sum"]}, {"contest_title": "\u7b2c 187 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 187", "contest_title_slug": "weekly-contest-187", "contest_id": 191, "contest_start_time": 1588473000, "contest_duration": 5400, "user_num": 3109, "question_slugs": ["destination-city", "check-if-all-1s-are-at-least-length-k-places-away", "longest-continuous-subarray-with-absolute-diff-less-than-or-equal-to-limit", "find-the-kth-smallest-sum-of-a-matrix-with-sorted-rows"]}, {"contest_title": "\u7b2c 188 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 188", "contest_title_slug": "weekly-contest-188", "contest_id": 195, "contest_start_time": 1589077800, "contest_duration": 5400, "user_num": 3982, "question_slugs": ["build-an-array-with-stack-operations", "count-triplets-that-can-form-two-arrays-of-equal-xor", "minimum-time-to-collect-all-apples-in-a-tree", "number-of-ways-of-cutting-a-pizza"]}, {"contest_title": "\u7b2c 189 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 189", "contest_title_slug": "weekly-contest-189", "contest_id": 197, "contest_start_time": 1589682600, "contest_duration": 5400, "user_num": 3692, "question_slugs": ["number-of-students-doing-homework-at-a-given-time", "rearrange-words-in-a-sentence", "people-whose-list-of-favorite-companies-is-not-a-subset-of-another-list", "maximum-number-of-darts-inside-of-a-circular-dartboard"]}, {"contest_title": "\u7b2c 190 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 190", "contest_title_slug": "weekly-contest-190", "contest_id": 201, "contest_start_time": 1590287400, "contest_duration": 5400, "user_num": 3352, "question_slugs": ["check-if-a-word-occurs-as-a-prefix-of-any-word-in-a-sentence", "maximum-number-of-vowels-in-a-substring-of-given-length", "pseudo-palindromic-paths-in-a-binary-tree", "max-dot-product-of-two-subsequences"]}, {"contest_title": "\u7b2c 191 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 191", "contest_title_slug": "weekly-contest-191", "contest_id": 203, "contest_start_time": 1590892200, "contest_duration": 5400, "user_num": 3687, "question_slugs": ["maximum-product-of-two-elements-in-an-array", "maximum-area-of-a-piece-of-cake-after-horizontal-and-vertical-cuts", "reorder-routes-to-make-all-paths-lead-to-the-city-zero", "probability-of-a-two-boxes-having-the-same-number-of-distinct-balls"]}, {"contest_title": "\u7b2c 192 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 192", "contest_title_slug": "weekly-contest-192", "contest_id": 207, "contest_start_time": 1591497000, "contest_duration": 5400, "user_num": 3615, "question_slugs": ["shuffle-the-array", "the-k-strongest-values-in-an-array", "design-browser-history", "paint-house-iii"]}, {"contest_title": "\u7b2c 193 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 193", "contest_title_slug": "weekly-contest-193", "contest_id": 209, "contest_start_time": 1592101800, "contest_duration": 5400, "user_num": 3804, "question_slugs": ["running-sum-of-1d-array", "least-number-of-unique-integers-after-k-removals", "minimum-number-of-days-to-make-m-bouquets", "kth-ancestor-of-a-tree-node"]}, {"contest_title": "\u7b2c 194 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 194", "contest_title_slug": "weekly-contest-194", "contest_id": 213, "contest_start_time": 1592706600, "contest_duration": 5400, "user_num": 4378, "question_slugs": ["xor-operation-in-an-array", "making-file-names-unique", "avoid-flood-in-the-city", "find-critical-and-pseudo-critical-edges-in-minimum-spanning-tree"]}, {"contest_title": "\u7b2c 195 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 195", "contest_title_slug": "weekly-contest-195", "contest_id": 215, "contest_start_time": 1593311400, "contest_duration": 5400, "user_num": 3401, "question_slugs": ["path-crossing", "check-if-array-pairs-are-divisible-by-k", "number-of-subsequences-that-satisfy-the-given-sum-condition", "max-value-of-equation"]}, {"contest_title": "\u7b2c 196 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 196", "contest_title_slug": "weekly-contest-196", "contest_id": 219, "contest_start_time": 1593916200, "contest_duration": 5400, "user_num": 5507, "question_slugs": ["can-make-arithmetic-progression-from-sequence", "last-moment-before-all-ants-fall-out-of-a-plank", "count-submatrices-with-all-ones", "minimum-possible-integer-after-at-most-k-adjacent-swaps-on-digits"]}, {"contest_title": "\u7b2c 197 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 197", "contest_title_slug": "weekly-contest-197", "contest_id": 221, "contest_start_time": 1594521000, "contest_duration": 5400, "user_num": 5275, "question_slugs": ["number-of-good-pairs", "number-of-substrings-with-only-1s", "path-with-maximum-probability", "best-position-for-a-service-centre"]}, {"contest_title": "\u7b2c 198 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 198", "contest_title_slug": "weekly-contest-198", "contest_id": 226, "contest_start_time": 1595125800, "contest_duration": 5400, "user_num": 5780, "question_slugs": ["water-bottles", "number-of-nodes-in-the-sub-tree-with-the-same-label", "maximum-number-of-non-overlapping-substrings", "find-a-value-of-a-mysterious-function-closest-to-target"]}, {"contest_title": "\u7b2c 199 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 199", "contest_title_slug": "weekly-contest-199", "contest_id": 228, "contest_start_time": 1595730600, "contest_duration": 5400, "user_num": 5232, "question_slugs": ["shuffle-string", "minimum-suffix-flips", "number-of-good-leaf-nodes-pairs", "string-compression-ii"]}, {"contest_title": "\u7b2c 200 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 200", "contest_title_slug": "weekly-contest-200", "contest_id": 235, "contest_start_time": 1596335400, "contest_duration": 5400, "user_num": 5476, "question_slugs": ["count-good-triplets", "find-the-winner-of-an-array-game", "minimum-swaps-to-arrange-a-binary-grid", "get-the-maximum-score"]}, {"contest_title": "\u7b2c 201 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 201", "contest_title_slug": "weekly-contest-201", "contest_id": 238, "contest_start_time": 1596940200, "contest_duration": 5400, "user_num": 5615, "question_slugs": ["make-the-string-great", "find-kth-bit-in-nth-binary-string", "maximum-number-of-non-overlapping-subarrays-with-sum-equals-target", "minimum-cost-to-cut-a-stick"]}, {"contest_title": "\u7b2c 202 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 202", "contest_title_slug": "weekly-contest-202", "contest_id": 242, "contest_start_time": 1597545000, "contest_duration": 5400, "user_num": 4989, "question_slugs": ["three-consecutive-odds", "minimum-operations-to-make-array-equal", "magnetic-force-between-two-balls", "minimum-number-of-days-to-eat-n-oranges"]}, {"contest_title": "\u7b2c 203 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 203", "contest_title_slug": "weekly-contest-203", "contest_id": 244, "contest_start_time": 1598149800, "contest_duration": 5400, "user_num": 5285, "question_slugs": ["most-visited-sector-in-a-circular-track", "maximum-number-of-coins-you-can-get", "find-latest-group-of-size-m", "stone-game-v"]}, {"contest_title": "\u7b2c 204 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 204", "contest_title_slug": "weekly-contest-204", "contest_id": 257, "contest_start_time": 1598754600, "contest_duration": 5400, "user_num": 4487, "question_slugs": ["detect-pattern-of-length-m-repeated-k-or-more-times", "maximum-length-of-subarray-with-positive-product", "minimum-number-of-days-to-disconnect-island", "number-of-ways-to-reorder-array-to-get-same-bst"]}, {"contest_title": "\u7b2c 205 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 205", "contest_title_slug": "weekly-contest-205", "contest_id": 260, "contest_start_time": 1599359400, "contest_duration": 5400, "user_num": 4176, "question_slugs": ["replace-all-s-to-avoid-consecutive-repeating-characters", "number-of-ways-where-square-of-number-is-equal-to-product-of-two-numbers", "minimum-time-to-make-rope-colorful", "remove-max-number-of-edges-to-keep-graph-fully-traversable"]}, {"contest_title": "\u7b2c 206 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 206", "contest_title_slug": "weekly-contest-206", "contest_id": 267, "contest_start_time": 1599964200, "contest_duration": 5400, "user_num": 4493, "question_slugs": ["special-positions-in-a-binary-matrix", "count-unhappy-friends", "min-cost-to-connect-all-points", "check-if-string-is-transformable-with-substring-sort-operations"]}, {"contest_title": "\u7b2c 207 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 207", "contest_title_slug": "weekly-contest-207", "contest_id": 278, "contest_start_time": 1600569000, "contest_duration": 5400, "user_num": 4116, "question_slugs": ["rearrange-spaces-between-words", "split-a-string-into-the-max-number-of-unique-substrings", "maximum-non-negative-product-in-a-matrix", "minimum-cost-to-connect-two-groups-of-points"]}, {"contest_title": "\u7b2c 208 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 208", "contest_title_slug": "weekly-contest-208", "contest_id": 289, "contest_start_time": 1601173800, "contest_duration": 5400, "user_num": 3582, "question_slugs": ["crawler-log-folder", "maximum-profit-of-operating-a-centennial-wheel", "throne-inheritance", "maximum-number-of-achievable-transfer-requests"]}, {"contest_title": "\u7b2c 209 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 209", "contest_title_slug": "weekly-contest-209", "contest_id": 291, "contest_start_time": 1601778600, "contest_duration": 5400, "user_num": 4023, "question_slugs": ["special-array-with-x-elements-greater-than-or-equal-x", "even-odd-tree", "maximum-number-of-visible-points", "minimum-one-bit-operations-to-make-integers-zero"]}, {"contest_title": "\u7b2c 210 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 210", "contest_title_slug": "weekly-contest-210", "contest_id": 295, "contest_start_time": 1602383400, "contest_duration": 5400, "user_num": 4007, "question_slugs": ["maximum-nesting-depth-of-the-parentheses", "maximal-network-rank", "split-two-strings-to-make-palindrome", "count-subtrees-with-max-distance-between-cities"]}, {"contest_title": "\u7b2c 211 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 211", "contest_title_slug": "weekly-contest-211", "contest_id": 297, "contest_start_time": 1602988200, "contest_duration": 5400, "user_num": 4034, "question_slugs": ["largest-substring-between-two-equal-characters", "lexicographically-smallest-string-after-applying-operations", "best-team-with-no-conflicts", "graph-connectivity-with-threshold"]}, {"contest_title": "\u7b2c 212 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 212", "contest_title_slug": "weekly-contest-212", "contest_id": 301, "contest_start_time": 1603593000, "contest_duration": 5400, "user_num": 4227, "question_slugs": ["slowest-key", "arithmetic-subarrays", "path-with-minimum-effort", "rank-transform-of-a-matrix"]}, {"contest_title": "\u7b2c 213 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 213", "contest_title_slug": "weekly-contest-213", "contest_id": 303, "contest_start_time": 1604197800, "contest_duration": 5400, "user_num": 3827, "question_slugs": ["check-array-formation-through-concatenation", "count-sorted-vowel-strings", "furthest-building-you-can-reach", "kth-smallest-instructions"]}, {"contest_title": "\u7b2c 214 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 214", "contest_title_slug": "weekly-contest-214", "contest_id": 307, "contest_start_time": 1604802600, "contest_duration": 5400, "user_num": 3598, "question_slugs": ["get-maximum-in-generated-array", "minimum-deletions-to-make-character-frequencies-unique", "sell-diminishing-valued-colored-balls", "create-sorted-array-through-instructions"]}, {"contest_title": "\u7b2c 215 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 215", "contest_title_slug": "weekly-contest-215", "contest_id": 309, "contest_start_time": 1605407400, "contest_duration": 5400, "user_num": 4429, "question_slugs": ["design-an-ordered-stream", "determine-if-two-strings-are-close", "minimum-operations-to-reduce-x-to-zero", "maximize-grid-happiness"]}, {"contest_title": "\u7b2c 216 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 216", "contest_title_slug": "weekly-contest-216", "contest_id": 313, "contest_start_time": 1606012200, "contest_duration": 5400, "user_num": 3857, "question_slugs": ["check-if-two-string-arrays-are-equivalent", "smallest-string-with-a-given-numeric-value", "ways-to-make-a-fair-array", "minimum-initial-energy-to-finish-tasks"]}, {"contest_title": "\u7b2c 217 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 217", "contest_title_slug": "weekly-contest-217", "contest_id": 315, "contest_start_time": 1606617000, "contest_duration": 5400, "user_num": 3745, "question_slugs": ["richest-customer-wealth", "find-the-most-competitive-subsequence", "minimum-moves-to-make-array-complementary", "minimize-deviation-in-array"]}, {"contest_title": "\u7b2c 218 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 218", "contest_title_slug": "weekly-contest-218", "contest_id": 319, "contest_start_time": 1607221800, "contest_duration": 5400, "user_num": 3762, "question_slugs": ["goal-parser-interpretation", "max-number-of-k-sum-pairs", "concatenation-of-consecutive-binary-numbers", "minimum-incompatibility"]}, {"contest_title": "\u7b2c 219 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 219", "contest_title_slug": "weekly-contest-219", "contest_id": 322, "contest_start_time": 1607826600, "contest_duration": 5400, "user_num": 3710, "question_slugs": ["count-of-matches-in-tournament", "partitioning-into-minimum-number-of-deci-binary-numbers", "stone-game-vii", "maximum-height-by-stacking-cuboids"]}, {"contest_title": "\u7b2c 220 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 220", "contest_title_slug": "weekly-contest-220", "contest_id": 326, "contest_start_time": 1608431400, "contest_duration": 5400, "user_num": 3691, "question_slugs": ["reformat-phone-number", "maximum-erasure-value", "jump-game-vi", "checking-existence-of-edge-length-limited-paths"]}, {"contest_title": "\u7b2c 221 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 221", "contest_title_slug": "weekly-contest-221", "contest_id": 328, "contest_start_time": 1609036200, "contest_duration": 5400, "user_num": 3398, "question_slugs": ["determine-if-string-halves-are-alike", "maximum-number-of-eaten-apples", "where-will-the-ball-fall", "maximum-xor-with-an-element-from-array"]}, {"contest_title": "\u7b2c 222 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 222", "contest_title_slug": "weekly-contest-222", "contest_id": 332, "contest_start_time": 1609641000, "contest_duration": 5400, "user_num": 3119, "question_slugs": ["maximum-units-on-a-truck", "count-good-meals", "ways-to-split-array-into-three-subarrays", "minimum-operations-to-make-a-subsequence"]}, {"contest_title": "\u7b2c 223 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 223", "contest_title_slug": "weekly-contest-223", "contest_id": 334, "contest_start_time": 1610245800, "contest_duration": 5400, "user_num": 3872, "question_slugs": ["decode-xored-array", "swapping-nodes-in-a-linked-list", "minimize-hamming-distance-after-swap-operations", "find-minimum-time-to-finish-all-jobs"]}, {"contest_title": "\u7b2c 224 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 224", "contest_title_slug": "weekly-contest-224", "contest_id": 338, "contest_start_time": 1610850600, "contest_duration": 5400, "user_num": 3795, "question_slugs": ["number-of-rectangles-that-can-form-the-largest-square", "tuple-with-same-product", "largest-submatrix-with-rearrangements", "cat-and-mouse-ii"]}, {"contest_title": "\u7b2c 225 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 225", "contest_title_slug": "weekly-contest-225", "contest_id": 340, "contest_start_time": 1611455400, "contest_duration": 5400, "user_num": 3853, "question_slugs": ["latest-time-by-replacing-hidden-digits", "change-minimum-characters-to-satisfy-one-of-three-conditions", "find-kth-largest-xor-coordinate-value", "building-boxes"]}, {"contest_title": "\u7b2c 226 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 226", "contest_title_slug": "weekly-contest-226", "contest_id": 344, "contest_start_time": 1612060200, "contest_duration": 5400, "user_num": 4034, "question_slugs": ["maximum-number-of-balls-in-a-box", "restore-the-array-from-adjacent-pairs", "can-you-eat-your-favorite-candy-on-your-favorite-day", "palindrome-partitioning-iv"]}, {"contest_title": "\u7b2c 227 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 227", "contest_title_slug": "weekly-contest-227", "contest_id": 346, "contest_start_time": 1612665000, "contest_duration": 5400, "user_num": 3546, "question_slugs": ["check-if-array-is-sorted-and-rotated", "maximum-score-from-removing-stones", "largest-merge-of-two-strings", "closest-subsequence-sum"]}, {"contest_title": "\u7b2c 228 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 228", "contest_title_slug": "weekly-contest-228", "contest_id": 350, "contest_start_time": 1613269800, "contest_duration": 5400, "user_num": 2484, "question_slugs": ["minimum-changes-to-make-alternating-binary-string", "count-number-of-homogenous-substrings", "minimum-limit-of-balls-in-a-bag", "minimum-degree-of-a-connected-trio-in-a-graph"]}, {"contest_title": "\u7b2c 229 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 229", "contest_title_slug": "weekly-contest-229", "contest_id": 352, "contest_start_time": 1613874600, "contest_duration": 5400, "user_num": 3484, "question_slugs": ["merge-strings-alternately", "minimum-number-of-operations-to-move-all-balls-to-each-box", "maximum-score-from-performing-multiplication-operations", "maximize-palindrome-length-from-subsequences"]}, {"contest_title": "\u7b2c 230 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 230", "contest_title_slug": "weekly-contest-230", "contest_id": 356, "contest_start_time": 1614479400, "contest_duration": 5400, "user_num": 3728, "question_slugs": ["count-items-matching-a-rule", "closest-dessert-cost", "equal-sum-arrays-with-minimum-number-of-operations", "car-fleet-ii"]}, {"contest_title": "\u7b2c 231 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 231", "contest_title_slug": "weekly-contest-231", "contest_id": 358, "contest_start_time": 1615084200, "contest_duration": 5400, "user_num": 4668, "question_slugs": ["check-if-binary-string-has-at-most-one-segment-of-ones", "minimum-elements-to-add-to-form-a-given-sum", "number-of-restricted-paths-from-first-to-last-node", "make-the-xor-of-all-segments-equal-to-zero"]}, {"contest_title": "\u7b2c 232 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 232", "contest_title_slug": "weekly-contest-232", "contest_id": 363, "contest_start_time": 1615689000, "contest_duration": 5400, "user_num": 4802, "question_slugs": ["check-if-one-string-swap-can-make-strings-equal", "find-center-of-star-graph", "maximum-average-pass-ratio", "maximum-score-of-a-good-subarray"]}, {"contest_title": "\u7b2c 233 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 233", "contest_title_slug": "weekly-contest-233", "contest_id": 371, "contest_start_time": 1616293800, "contest_duration": 5400, "user_num": 5010, "question_slugs": ["maximum-ascending-subarray-sum", "number-of-orders-in-the-backlog", "maximum-value-at-a-given-index-in-a-bounded-array", "count-pairs-with-xor-in-a-range"]}, {"contest_title": "\u7b2c 234 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 234", "contest_title_slug": "weekly-contest-234", "contest_id": 375, "contest_start_time": 1616898600, "contest_duration": 5400, "user_num": 4998, "question_slugs": ["number-of-different-integers-in-a-string", "minimum-number-of-operations-to-reinitialize-a-permutation", "evaluate-the-bracket-pairs-of-a-string", "maximize-number-of-nice-divisors"]}, {"contest_title": "\u7b2c 235 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 235", "contest_title_slug": "weekly-contest-235", "contest_id": 377, "contest_start_time": 1617503400, "contest_duration": 5400, "user_num": 4494, "question_slugs": ["truncate-sentence", "finding-the-users-active-minutes", "minimum-absolute-sum-difference", "number-of-different-subsequences-gcds"]}, {"contest_title": "\u7b2c 236 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 236", "contest_title_slug": "weekly-contest-236", "contest_id": 391, "contest_start_time": 1618108200, "contest_duration": 5400, "user_num": 5113, "question_slugs": ["sign-of-the-product-of-an-array", "find-the-winner-of-the-circular-game", "minimum-sideway-jumps", "finding-mk-average"]}, {"contest_title": "\u7b2c 237 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 237", "contest_title_slug": "weekly-contest-237", "contest_id": 393, "contest_start_time": 1618713000, "contest_duration": 5400, "user_num": 4577, "question_slugs": ["check-if-the-sentence-is-pangram", "maximum-ice-cream-bars", "single-threaded-cpu", "find-xor-sum-of-all-pairs-bitwise-and"]}, {"contest_title": "\u7b2c 238 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 238", "contest_title_slug": "weekly-contest-238", "contest_id": 397, "contest_start_time": 1619317800, "contest_duration": 5400, "user_num": 3978, "question_slugs": ["sum-of-digits-in-base-k", "frequency-of-the-most-frequent-element", "longest-substring-of-all-vowels-in-order", "maximum-building-height"]}, {"contest_title": "\u7b2c 239 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 239", "contest_title_slug": "weekly-contest-239", "contest_id": 399, "contest_start_time": 1619922600, "contest_duration": 5400, "user_num": 3907, "question_slugs": ["minimum-distance-to-the-target-element", "splitting-a-string-into-descending-consecutive-values", "minimum-adjacent-swaps-to-reach-the-kth-smallest-number", "minimum-interval-to-include-each-query"]}, {"contest_title": "\u7b2c 240 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 240", "contest_title_slug": "weekly-contest-240", "contest_id": 403, "contest_start_time": 1620527400, "contest_duration": 5400, "user_num": 4307, "question_slugs": ["maximum-population-year", "maximum-distance-between-a-pair-of-values", "maximum-subarray-min-product", "largest-color-value-in-a-directed-graph"]}, {"contest_title": "\u7b2c 241 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 241", "contest_title_slug": "weekly-contest-241", "contest_id": 405, "contest_start_time": 1621132200, "contest_duration": 5400, "user_num": 4491, "question_slugs": ["sum-of-all-subset-xor-totals", "minimum-number-of-swaps-to-make-the-binary-string-alternating", "finding-pairs-with-a-certain-sum", "number-of-ways-to-rearrange-sticks-with-k-sticks-visible"]}, {"contest_title": "\u7b2c 242 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 242", "contest_title_slug": "weekly-contest-242", "contest_id": 409, "contest_start_time": 1621737000, "contest_duration": 5400, "user_num": 4306, "question_slugs": ["longer-contiguous-segments-of-ones-than-zeros", "minimum-speed-to-arrive-on-time", "jump-game-vii", "stone-game-viii"]}, {"contest_title": "\u7b2c 243 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 243", "contest_title_slug": "weekly-contest-243", "contest_id": 411, "contest_start_time": 1622341800, "contest_duration": 5400, "user_num": 4493, "question_slugs": ["check-if-word-equals-summation-of-two-words", "maximum-value-after-insertion", "process-tasks-using-servers", "minimum-skips-to-arrive-at-meeting-on-time"]}, {"contest_title": "\u7b2c 244 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 244", "contest_title_slug": "weekly-contest-244", "contest_id": 415, "contest_start_time": 1622946600, "contest_duration": 5400, "user_num": 4430, "question_slugs": ["determine-whether-matrix-can-be-obtained-by-rotation", "reduction-operations-to-make-the-array-elements-equal", "minimum-number-of-flips-to-make-the-binary-string-alternating", "minimum-space-wasted-from-packaging"]}, {"contest_title": "\u7b2c 245 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 245", "contest_title_slug": "weekly-contest-245", "contest_id": 417, "contest_start_time": 1623551400, "contest_duration": 5400, "user_num": 4271, "question_slugs": ["redistribute-characters-to-make-all-strings-equal", "maximum-number-of-removable-characters", "merge-triplets-to-form-target-triplet", "the-earliest-and-latest-rounds-where-players-compete"]}, {"contest_title": "\u7b2c 246 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 246", "contest_title_slug": "weekly-contest-246", "contest_id": 422, "contest_start_time": 1624156200, "contest_duration": 5400, "user_num": 4136, "question_slugs": ["largest-odd-number-in-string", "the-number-of-full-rounds-you-have-played", "count-sub-islands", "minimum-absolute-difference-queries"]}, {"contest_title": "\u7b2c 247 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 247", "contest_title_slug": "weekly-contest-247", "contest_id": 426, "contest_start_time": 1624761000, "contest_duration": 5400, "user_num": 3981, "question_slugs": ["maximum-product-difference-between-two-pairs", "cyclically-rotating-a-grid", "number-of-wonderful-substrings", "count-ways-to-build-rooms-in-an-ant-colony"]}, {"contest_title": "\u7b2c 248 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 248", "contest_title_slug": "weekly-contest-248", "contest_id": 430, "contest_start_time": 1625365800, "contest_duration": 5400, "user_num": 4451, "question_slugs": ["build-array-from-permutation", "eliminate-maximum-number-of-monsters", "count-good-numbers", "longest-common-subpath"]}, {"contest_title": "\u7b2c 249 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 249", "contest_title_slug": "weekly-contest-249", "contest_id": 432, "contest_start_time": 1625970600, "contest_duration": 5400, "user_num": 4335, "question_slugs": ["concatenation-of-array", "unique-length-3-palindromic-subsequences", "painting-a-grid-with-three-different-colors", "merge-bsts-to-create-single-bst"]}, {"contest_title": "\u7b2c 250 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 250", "contest_title_slug": "weekly-contest-250", "contest_id": 436, "contest_start_time": 1626575400, "contest_duration": 5400, "user_num": 4315, "question_slugs": ["maximum-number-of-words-you-can-type", "add-minimum-number-of-rungs", "maximum-number-of-points-with-cost", "maximum-genetic-difference-query"]}, {"contest_title": "\u7b2c 251 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 251", "contest_title_slug": "weekly-contest-251", "contest_id": 438, "contest_start_time": 1627180200, "contest_duration": 5400, "user_num": 4747, "question_slugs": ["sum-of-digits-of-string-after-convert", "largest-number-after-mutating-substring", "maximum-compatibility-score-sum", "delete-duplicate-folders-in-system"]}, {"contest_title": "\u7b2c 252 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 252", "contest_title_slug": "weekly-contest-252", "contest_id": 442, "contest_start_time": 1627785000, "contest_duration": 5400, "user_num": 4647, "question_slugs": ["three-divisors", "maximum-number-of-weeks-for-which-you-can-work", "minimum-garden-perimeter-to-collect-enough-apples", "count-number-of-special-subsequences"]}, {"contest_title": "\u7b2c 253 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 253", "contest_title_slug": "weekly-contest-253", "contest_id": 444, "contest_start_time": 1628389800, "contest_duration": 5400, "user_num": 4570, "question_slugs": ["check-if-string-is-a-prefix-of-array", "remove-stones-to-minimize-the-total", "minimum-number-of-swaps-to-make-the-string-balanced", "find-the-longest-valid-obstacle-course-at-each-position"]}, {"contest_title": "\u7b2c 254 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 254", "contest_title_slug": "weekly-contest-254", "contest_id": 449, "contest_start_time": 1628994600, "contest_duration": 5400, "user_num": 4349, "question_slugs": ["number-of-strings-that-appear-as-substrings-in-word", "array-with-elements-not-equal-to-average-of-neighbors", "minimum-non-zero-product-of-the-array-elements", "last-day-where-you-can-still-cross"]}, {"contest_title": "\u7b2c 255 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 255", "contest_title_slug": "weekly-contest-255", "contest_id": 457, "contest_start_time": 1629599400, "contest_duration": 5400, "user_num": 4333, "question_slugs": ["find-greatest-common-divisor-of-array", "find-unique-binary-string", "minimize-the-difference-between-target-and-chosen-elements", "find-array-given-subset-sums"]}, {"contest_title": "\u7b2c 256 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 256", "contest_title_slug": "weekly-contest-256", "contest_id": 462, "contest_start_time": 1630204200, "contest_duration": 5400, "user_num": 4136, "question_slugs": ["minimum-difference-between-highest-and-lowest-of-k-scores", "find-the-kth-largest-integer-in-the-array", "minimum-number-of-work-sessions-to-finish-the-tasks", "number-of-unique-good-subsequences"]}, {"contest_title": "\u7b2c 257 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 257", "contest_title_slug": "weekly-contest-257", "contest_id": 464, "contest_start_time": 1630809000, "contest_duration": 5400, "user_num": 4278, "question_slugs": ["count-special-quadruplets", "the-number-of-weak-characters-in-the-game", "first-day-where-you-have-been-in-all-the-rooms", "gcd-sort-of-an-array"]}, {"contest_title": "\u7b2c 258 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 258", "contest_title_slug": "weekly-contest-258", "contest_id": 468, "contest_start_time": 1631413800, "contest_duration": 5400, "user_num": 4519, "question_slugs": ["reverse-prefix-of-word", "number-of-pairs-of-interchangeable-rectangles", "maximum-product-of-the-length-of-two-palindromic-subsequences", "smallest-missing-genetic-value-in-each-subtree"]}, {"contest_title": "\u7b2c 259 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 259", "contest_title_slug": "weekly-contest-259", "contest_id": 474, "contest_start_time": 1632018600, "contest_duration": 5400, "user_num": 3775, "question_slugs": ["final-value-of-variable-after-performing-operations", "sum-of-beauty-in-the-array", "detect-squares", "longest-subsequence-repeated-k-times"]}, {"contest_title": "\u7b2c 260 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 260", "contest_title_slug": "weekly-contest-260", "contest_id": 478, "contest_start_time": 1632623400, "contest_duration": 5400, "user_num": 3654, "question_slugs": ["maximum-difference-between-increasing-elements", "grid-game", "check-if-word-can-be-placed-in-crossword", "the-score-of-students-solving-math-expression"]}, {"contest_title": "\u7b2c 261 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 261", "contest_title_slug": "weekly-contest-261", "contest_id": 481, "contest_start_time": 1633228200, "contest_duration": 5400, "user_num": 3368, "question_slugs": ["minimum-moves-to-convert-string", "find-missing-observations", "stone-game-ix", "smallest-k-length-subsequence-with-occurrences-of-a-letter"]}, {"contest_title": "\u7b2c 262 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 262", "contest_title_slug": "weekly-contest-262", "contest_id": 485, "contest_start_time": 1633833000, "contest_duration": 5400, "user_num": 4261, "question_slugs": ["two-out-of-three", "minimum-operations-to-make-a-uni-value-grid", "stock-price-fluctuation", "partition-array-into-two-arrays-to-minimize-sum-difference"]}, {"contest_title": "\u7b2c 263 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 263", "contest_title_slug": "weekly-contest-263", "contest_id": 487, "contest_start_time": 1634437800, "contest_duration": 5400, "user_num": 4572, "question_slugs": ["check-if-numbers-are-ascending-in-a-sentence", "simple-bank-system", "count-number-of-maximum-bitwise-or-subsets", "second-minimum-time-to-reach-destination"]}, {"contest_title": "\u7b2c 264 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 264", "contest_title_slug": "weekly-contest-264", "contest_id": 491, "contest_start_time": 1635042600, "contest_duration": 5400, "user_num": 4659, "question_slugs": ["number-of-valid-words-in-a-sentence", "next-greater-numerically-balanced-number", "count-nodes-with-the-highest-score", "parallel-courses-iii"]}, {"contest_title": "\u7b2c 265 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 265", "contest_title_slug": "weekly-contest-265", "contest_id": 493, "contest_start_time": 1635647400, "contest_duration": 5400, "user_num": 4182, "question_slugs": ["smallest-index-with-equal-value", "find-the-minimum-and-maximum-number-of-nodes-between-critical-points", "minimum-operations-to-convert-number", "check-if-an-original-string-exists-given-two-encoded-strings"]}, {"contest_title": "\u7b2c 266 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 266", "contest_title_slug": "weekly-contest-266", "contest_id": 498, "contest_start_time": 1636252200, "contest_duration": 5400, "user_num": 4385, "question_slugs": ["count-vowel-substrings-of-a-string", "vowels-of-all-substrings", "minimized-maximum-of-products-distributed-to-any-store", "maximum-path-quality-of-a-graph"]}, {"contest_title": "\u7b2c 267 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 267", "contest_title_slug": "weekly-contest-267", "contest_id": 500, "contest_start_time": 1636857000, "contest_duration": 5400, "user_num": 4365, "question_slugs": ["time-needed-to-buy-tickets", "reverse-nodes-in-even-length-groups", "decode-the-slanted-ciphertext", "process-restricted-friend-requests"]}, {"contest_title": "\u7b2c 268 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 268", "contest_title_slug": "weekly-contest-268", "contest_id": 504, "contest_start_time": 1637461800, "contest_duration": 5400, "user_num": 4398, "question_slugs": ["two-furthest-houses-with-different-colors", "watering-plants", "range-frequency-queries", "sum-of-k-mirror-numbers"]}, {"contest_title": "\u7b2c 269 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 269", "contest_title_slug": "weekly-contest-269", "contest_id": 506, "contest_start_time": 1638066600, "contest_duration": 5400, "user_num": 4293, "question_slugs": ["find-target-indices-after-sorting-array", "k-radius-subarray-averages", "removing-minimum-and-maximum-from-array", "find-all-people-with-secret"]}, {"contest_title": "\u7b2c 270 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 270", "contest_title_slug": "weekly-contest-270", "contest_id": 510, "contest_start_time": 1638671400, "contest_duration": 5400, "user_num": 4748, "question_slugs": ["finding-3-digit-even-numbers", "delete-the-middle-node-of-a-linked-list", "step-by-step-directions-from-a-binary-tree-node-to-another", "valid-arrangement-of-pairs"]}, {"contest_title": "\u7b2c 271 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 271", "contest_title_slug": "weekly-contest-271", "contest_id": 512, "contest_start_time": 1639276200, "contest_duration": 5400, "user_num": 4562, "question_slugs": ["rings-and-rods", "sum-of-subarray-ranges", "watering-plants-ii", "maximum-fruits-harvested-after-at-most-k-steps"]}, {"contest_title": "\u7b2c 272 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 272", "contest_title_slug": "weekly-contest-272", "contest_id": 516, "contest_start_time": 1639881000, "contest_duration": 5400, "user_num": 4698, "question_slugs": ["find-first-palindromic-string-in-the-array", "adding-spaces-to-a-string", "number-of-smooth-descent-periods-of-a-stock", "minimum-operations-to-make-the-array-k-increasing"]}, {"contest_title": "\u7b2c 273 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 273", "contest_title_slug": "weekly-contest-273", "contest_id": 518, "contest_start_time": 1640485800, "contest_duration": 5400, "user_num": 4368, "question_slugs": ["a-number-after-a-double-reversal", "execution-of-all-suffix-instructions-staying-in-a-grid", "intervals-between-identical-elements", "recover-the-original-array"]}, {"contest_title": "\u7b2c 274 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 274", "contest_title_slug": "weekly-contest-274", "contest_id": 522, "contest_start_time": 1641090600, "contest_duration": 5400, "user_num": 4109, "question_slugs": ["check-if-all-as-appears-before-all-bs", "number-of-laser-beams-in-a-bank", "destroying-asteroids", "maximum-employees-to-be-invited-to-a-meeting"]}, {"contest_title": "\u7b2c 275 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 275", "contest_title_slug": "weekly-contest-275", "contest_id": 524, "contest_start_time": 1641695400, "contest_duration": 5400, "user_num": 4787, "question_slugs": ["check-if-every-row-and-column-contains-all-numbers", "minimum-swaps-to-group-all-1s-together-ii", "count-words-obtained-after-adding-a-letter", "earliest-possible-day-of-full-bloom"]}, {"contest_title": "\u7b2c 276 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 276", "contest_title_slug": "weekly-contest-276", "contest_id": 528, "contest_start_time": 1642300200, "contest_duration": 5400, "user_num": 5244, "question_slugs": ["divide-a-string-into-groups-of-size-k", "minimum-moves-to-reach-target-score", "solving-questions-with-brainpower", "maximum-running-time-of-n-computers"]}, {"contest_title": "\u7b2c 277 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 277", "contest_title_slug": "weekly-contest-277", "contest_id": 530, "contest_start_time": 1642905000, "contest_duration": 5400, "user_num": 5060, "question_slugs": ["count-elements-with-strictly-smaller-and-greater-elements", "rearrange-array-elements-by-sign", "find-all-lonely-numbers-in-the-array", "maximum-good-people-based-on-statements"]}, {"contest_title": "\u7b2c 278 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 278", "contest_title_slug": "weekly-contest-278", "contest_id": 534, "contest_start_time": 1643509800, "contest_duration": 5400, "user_num": 4643, "question_slugs": ["keep-multiplying-found-values-by-two", "all-divisions-with-the-highest-score-of-a-binary-array", "find-substring-with-given-hash-value", "groups-of-strings"]}, {"contest_title": "\u7b2c 279 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 279", "contest_title_slug": "weekly-contest-279", "contest_id": 536, "contest_start_time": 1644114600, "contest_duration": 5400, "user_num": 4132, "question_slugs": ["sort-even-and-odd-indices-independently", "smallest-value-of-the-rearranged-number", "design-bitset", "minimum-time-to-remove-all-cars-containing-illegal-goods"]}, {"contest_title": "\u7b2c 280 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 280", "contest_title_slug": "weekly-contest-280", "contest_id": 540, "contest_start_time": 1644719400, "contest_duration": 5400, "user_num": 5834, "question_slugs": ["count-operations-to-obtain-zero", "minimum-operations-to-make-the-array-alternating", "removing-minimum-number-of-magic-beans", "maximum-and-sum-of-array"]}, {"contest_title": "\u7b2c 281 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 281", "contest_title_slug": "weekly-contest-281", "contest_id": 542, "contest_start_time": 1645324200, "contest_duration": 6000, "user_num": 6005, "question_slugs": ["count-integers-with-even-digit-sum", "merge-nodes-in-between-zeros", "construct-string-with-repeat-limit", "count-array-pairs-divisible-by-k"]}, {"contest_title": "\u7b2c 282 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 282", "contest_title_slug": "weekly-contest-282", "contest_id": 546, "contest_start_time": 1645929000, "contest_duration": 5400, "user_num": 7164, "question_slugs": ["counting-words-with-a-given-prefix", "minimum-number-of-steps-to-make-two-strings-anagram-ii", "minimum-time-to-complete-trips", "minimum-time-to-finish-the-race"]}, {"contest_title": "\u7b2c 283 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 283", "contest_title_slug": "weekly-contest-283", "contest_id": 551, "contest_start_time": 1646533800, "contest_duration": 5400, "user_num": 7817, "question_slugs": ["cells-in-a-range-on-an-excel-sheet", "append-k-integers-with-minimal-sum", "create-binary-tree-from-descriptions", "replace-non-coprime-numbers-in-array"]}, {"contest_title": "\u7b2c 284 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 284", "contest_title_slug": "weekly-contest-284", "contest_id": 555, "contest_start_time": 1647138600, "contest_duration": 5400, "user_num": 8483, "question_slugs": ["find-all-k-distant-indices-in-an-array", "count-artifacts-that-can-be-extracted", "maximize-the-topmost-element-after-k-moves", "minimum-weighted-subgraph-with-the-required-paths"]}, {"contest_title": "\u7b2c 285 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 285", "contest_title_slug": "weekly-contest-285", "contest_id": 558, "contest_start_time": 1647743400, "contest_duration": 5400, "user_num": 7501, "question_slugs": ["count-hills-and-valleys-in-an-array", "count-collisions-on-a-road", "maximum-points-in-an-archery-competition", "longest-substring-of-one-repeating-character"]}, {"contest_title": "\u7b2c 286 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 286", "contest_title_slug": "weekly-contest-286", "contest_id": 564, "contest_start_time": 1648348200, "contest_duration": 5400, "user_num": 7248, "question_slugs": ["find-the-difference-of-two-arrays", "minimum-deletions-to-make-array-beautiful", "find-palindrome-with-fixed-length", "maximum-value-of-k-coins-from-piles"]}, {"contest_title": "\u7b2c 287 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 287", "contest_title_slug": "weekly-contest-287", "contest_id": 569, "contest_start_time": 1648953000, "contest_duration": 5400, "user_num": 6811, "question_slugs": ["minimum-number-of-operations-to-convert-time", "find-players-with-zero-or-one-losses", "maximum-candies-allocated-to-k-children", "encrypt-and-decrypt-strings"]}, {"contest_title": "\u7b2c 288 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 288", "contest_title_slug": "weekly-contest-288", "contest_id": 573, "contest_start_time": 1649557800, "contest_duration": 5400, "user_num": 6926, "question_slugs": ["largest-number-after-digit-swaps-by-parity", "minimize-result-by-adding-parentheses-to-expression", "maximum-product-after-k-increments", "maximum-total-beauty-of-the-gardens"]}, {"contest_title": "\u7b2c 289 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 289", "contest_title_slug": "weekly-contest-289", "contest_id": 576, "contest_start_time": 1650162600, "contest_duration": 5400, "user_num": 7293, "question_slugs": ["calculate-digit-sum-of-a-string", "minimum-rounds-to-complete-all-tasks", "maximum-trailing-zeros-in-a-cornered-path", "longest-path-with-different-adjacent-characters"]}, {"contest_title": "\u7b2c 290 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 290", "contest_title_slug": "weekly-contest-290", "contest_id": 582, "contest_start_time": 1650767400, "contest_duration": 5400, "user_num": 6275, "question_slugs": ["intersection-of-multiple-arrays", "count-lattice-points-inside-a-circle", "count-number-of-rectangles-containing-each-point", "number-of-flowers-in-full-bloom"]}, {"contest_title": "\u7b2c 291 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 291", "contest_title_slug": "weekly-contest-291", "contest_id": 587, "contest_start_time": 1651372200, "contest_duration": 5400, "user_num": 6574, "question_slugs": ["remove-digit-from-number-to-maximize-result", "minimum-consecutive-cards-to-pick-up", "k-divisible-elements-subarrays", "total-appeal-of-a-string"]}, {"contest_title": "\u7b2c 292 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 292", "contest_title_slug": "weekly-contest-292", "contest_id": 591, "contest_start_time": 1651977000, "contest_duration": 5400, "user_num": 6884, "question_slugs": ["largest-3-same-digit-number-in-string", "count-nodes-equal-to-average-of-subtree", "count-number-of-texts", "check-if-there-is-a-valid-parentheses-string-path"]}, {"contest_title": "\u7b2c 293 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 293", "contest_title_slug": "weekly-contest-293", "contest_id": 593, "contest_start_time": 1652581800, "contest_duration": 5400, "user_num": 7357, "question_slugs": ["find-resultant-array-after-removing-anagrams", "maximum-consecutive-floors-without-special-floors", "largest-combination-with-bitwise-and-greater-than-zero", "count-integers-in-intervals"]}, {"contest_title": "\u7b2c 294 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 294", "contest_title_slug": "weekly-contest-294", "contest_id": 599, "contest_start_time": 1653186600, "contest_duration": 5400, "user_num": 6640, "question_slugs": ["percentage-of-letter-in-string", "maximum-bags-with-full-capacity-of-rocks", "minimum-lines-to-represent-a-line-chart", "sum-of-total-strength-of-wizards"]}, {"contest_title": "\u7b2c 295 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 295", "contest_title_slug": "weekly-contest-295", "contest_id": 605, "contest_start_time": 1653791400, "contest_duration": 5400, "user_num": 6447, "question_slugs": ["rearrange-characters-to-make-target-string", "apply-discount-to-prices", "steps-to-make-array-non-decreasing", "minimum-obstacle-removal-to-reach-corner"]}, {"contest_title": "\u7b2c 296 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 296", "contest_title_slug": "weekly-contest-296", "contest_id": 609, "contest_start_time": 1654396200, "contest_duration": 5400, "user_num": 5721, "question_slugs": ["min-max-game", "partition-array-such-that-maximum-difference-is-k", "replace-elements-in-an-array", "design-a-text-editor"]}, {"contest_title": "\u7b2c 297 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 297", "contest_title_slug": "weekly-contest-297", "contest_id": 611, "contest_start_time": 1655001000, "contest_duration": 5400, "user_num": 5915, "question_slugs": ["calculate-amount-paid-in-taxes", "minimum-path-cost-in-a-grid", "fair-distribution-of-cookies", "naming-a-company"]}, {"contest_title": "\u7b2c 298 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 298", "contest_title_slug": "weekly-contest-298", "contest_id": 615, "contest_start_time": 1655605800, "contest_duration": 5400, "user_num": 6228, "question_slugs": ["greatest-english-letter-in-upper-and-lower-case", "sum-of-numbers-with-units-digit-k", "longest-binary-subsequence-less-than-or-equal-to-k", "selling-pieces-of-wood"]}, {"contest_title": "\u7b2c 299 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 299", "contest_title_slug": "weekly-contest-299", "contest_id": 618, "contest_start_time": 1656210600, "contest_duration": 5400, "user_num": 6108, "question_slugs": ["check-if-matrix-is-x-matrix", "count-number-of-ways-to-place-houses", "maximum-score-of-spliced-array", "minimum-score-after-removals-on-a-tree"]}, {"contest_title": "\u7b2c 300 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 300", "contest_title_slug": "weekly-contest-300", "contest_id": 647, "contest_start_time": 1656815400, "contest_duration": 5400, "user_num": 6792, "question_slugs": ["decode-the-message", "spiral-matrix-iv", "number-of-people-aware-of-a-secret", "number-of-increasing-paths-in-a-grid"]}, {"contest_title": "\u7b2c 301 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 301", "contest_title_slug": "weekly-contest-301", "contest_id": 649, "contest_start_time": 1657420200, "contest_duration": 5400, "user_num": 7133, "question_slugs": ["minimum-amount-of-time-to-fill-cups", "smallest-number-in-infinite-set", "move-pieces-to-obtain-a-string", "count-the-number-of-ideal-arrays"]}, {"contest_title": "\u7b2c 302 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 302", "contest_title_slug": "weekly-contest-302", "contest_id": 653, "contest_start_time": 1658025000, "contest_duration": 5400, "user_num": 7092, "question_slugs": ["maximum-number-of-pairs-in-array", "max-sum-of-a-pair-with-equal-sum-of-digits", "query-kth-smallest-trimmed-number", "minimum-deletions-to-make-array-divisible"]}, {"contest_title": "\u7b2c 303 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 303", "contest_title_slug": "weekly-contest-303", "contest_id": 655, "contest_start_time": 1658629800, "contest_duration": 5400, "user_num": 7032, "question_slugs": ["first-letter-to-appear-twice", "equal-row-and-column-pairs", "design-a-food-rating-system", "number-of-excellent-pairs"]}, {"contest_title": "\u7b2c 304 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 304", "contest_title_slug": "weekly-contest-304", "contest_id": 659, "contest_start_time": 1659234600, "contest_duration": 5400, "user_num": 7372, "question_slugs": ["make-array-zero-by-subtracting-equal-amounts", "maximum-number-of-groups-entering-a-competition", "find-closest-node-to-given-two-nodes", "longest-cycle-in-a-graph"]}, {"contest_title": "\u7b2c 305 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 305", "contest_title_slug": "weekly-contest-305", "contest_id": 663, "contest_start_time": 1659839400, "contest_duration": 5400, "user_num": 7465, "question_slugs": ["number-of-arithmetic-triplets", "reachable-nodes-with-restrictions", "check-if-there-is-a-valid-partition-for-the-array", "longest-ideal-subsequence"]}, {"contest_title": "\u7b2c 306 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 306", "contest_title_slug": "weekly-contest-306", "contest_id": 669, "contest_start_time": 1660444200, "contest_duration": 5400, "user_num": 7500, "question_slugs": ["largest-local-values-in-a-matrix", "node-with-highest-edge-score", "construct-smallest-number-from-di-string", "count-special-integers"]}, {"contest_title": "\u7b2c 307 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 307", "contest_title_slug": "weekly-contest-307", "contest_id": 671, "contest_start_time": 1661049000, "contest_duration": 5400, "user_num": 7064, "question_slugs": ["minimum-hours-of-training-to-win-a-competition", "largest-palindromic-number", "amount-of-time-for-binary-tree-to-be-infected", "find-the-k-sum-of-an-array"]}, {"contest_title": "\u7b2c 308 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 308", "contest_title_slug": "weekly-contest-308", "contest_id": 689, "contest_start_time": 1661653800, "contest_duration": 5400, "user_num": 6394, "question_slugs": ["longest-subsequence-with-limited-sum", "removing-stars-from-a-string", "minimum-amount-of-time-to-collect-garbage", "build-a-matrix-with-conditions"]}, {"contest_title": "\u7b2c 309 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 309", "contest_title_slug": "weekly-contest-309", "contest_id": 693, "contest_start_time": 1662258600, "contest_duration": 5400, "user_num": 7972, "question_slugs": ["check-distances-between-same-letters", "number-of-ways-to-reach-a-position-after-exactly-k-steps", "longest-nice-subarray", "meeting-rooms-iii"]}, {"contest_title": "\u7b2c 310 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 310", "contest_title_slug": "weekly-contest-310", "contest_id": 704, "contest_start_time": 1662863400, "contest_duration": 5400, "user_num": 6081, "question_slugs": ["most-frequent-even-element", "optimal-partition-of-string", "divide-intervals-into-minimum-number-of-groups", "longest-increasing-subsequence-ii"]}, {"contest_title": "\u7b2c 311 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 311", "contest_title_slug": "weekly-contest-311", "contest_id": 741, "contest_start_time": 1663468200, "contest_duration": 5400, "user_num": 6710, "question_slugs": ["smallest-even-multiple", "length-of-the-longest-alphabetical-continuous-substring", "reverse-odd-levels-of-binary-tree", "sum-of-prefix-scores-of-strings"]}, {"contest_title": "\u7b2c 312 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 312", "contest_title_slug": "weekly-contest-312", "contest_id": 746, "contest_start_time": 1664073000, "contest_duration": 5400, "user_num": 6638, "question_slugs": ["sort-the-people", "longest-subarray-with-maximum-bitwise-and", "find-all-good-indices", "number-of-good-paths"]}, {"contest_title": "\u7b2c 313 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 313", "contest_title_slug": "weekly-contest-313", "contest_id": 750, "contest_start_time": 1664677800, "contest_duration": 5400, "user_num": 5445, "question_slugs": ["number-of-common-factors", "maximum-sum-of-an-hourglass", "minimize-xor", "maximum-deletions-on-a-string"]}, {"contest_title": "\u7b2c 314 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 314", "contest_title_slug": "weekly-contest-314", "contest_id": 756, "contest_start_time": 1665282600, "contest_duration": 5400, "user_num": 4838, "question_slugs": ["the-employee-that-worked-on-the-longest-task", "find-the-original-array-of-prefix-xor", "using-a-robot-to-print-the-lexicographically-smallest-string", "paths-in-matrix-whose-sum-is-divisible-by-k"]}, {"contest_title": "\u7b2c 315 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 315", "contest_title_slug": "weekly-contest-315", "contest_id": 759, "contest_start_time": 1665887400, "contest_duration": 5400, "user_num": 6490, "question_slugs": ["largest-positive-integer-that-exists-with-its-negative", "count-number-of-distinct-integers-after-reverse-operations", "sum-of-number-and-its-reverse", "count-subarrays-with-fixed-bounds"]}, {"contest_title": "\u7b2c 316 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 316", "contest_title_slug": "weekly-contest-316", "contest_id": 764, "contest_start_time": 1666492200, "contest_duration": 5400, "user_num": 6387, "question_slugs": ["determine-if-two-events-have-conflict", "number-of-subarrays-with-gcd-equal-to-k", "minimum-cost-to-make-array-equal", "minimum-number-of-operations-to-make-arrays-similar"]}, {"contest_title": "\u7b2c 317 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 317", "contest_title_slug": "weekly-contest-317", "contest_id": 767, "contest_start_time": 1667097000, "contest_duration": 5400, "user_num": 5660, "question_slugs": ["average-value-of-even-numbers-that-are-divisible-by-three", "most-popular-video-creator", "minimum-addition-to-make-integer-beautiful", "height-of-binary-tree-after-subtree-removal-queries"]}, {"contest_title": "\u7b2c 318 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 318", "contest_title_slug": "weekly-contest-318", "contest_id": 771, "contest_start_time": 1667701800, "contest_duration": 5400, "user_num": 5670, "question_slugs": ["apply-operations-to-an-array", "maximum-sum-of-distinct-subarrays-with-length-k", "total-cost-to-hire-k-workers", "minimum-total-distance-traveled"]}, {"contest_title": "\u7b2c 319 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 319", "contest_title_slug": "weekly-contest-319", "contest_id": 773, "contest_start_time": 1668306600, "contest_duration": 5400, "user_num": 6175, "question_slugs": ["convert-the-temperature", "number-of-subarrays-with-lcm-equal-to-k", "minimum-number-of-operations-to-sort-a-binary-tree-by-level", "maximum-number-of-non-overlapping-palindrome-substrings"]}, {"contest_title": "\u7b2c 320 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 320", "contest_title_slug": "weekly-contest-320", "contest_id": 777, "contest_start_time": 1668911400, "contest_duration": 5400, "user_num": 5678, "question_slugs": ["number-of-unequal-triplets-in-array", "closest-nodes-queries-in-a-binary-search-tree", "minimum-fuel-cost-to-report-to-the-capital", "number-of-beautiful-partitions"]}, {"contest_title": "\u7b2c 321 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 321", "contest_title_slug": "weekly-contest-321", "contest_id": 779, "contest_start_time": 1669516200, "contest_duration": 5400, "user_num": 5115, "question_slugs": ["find-the-pivot-integer", "append-characters-to-string-to-make-subsequence", "remove-nodes-from-linked-list", "count-subarrays-with-median-k"]}, {"contest_title": "\u7b2c 322 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 322", "contest_title_slug": "weekly-contest-322", "contest_id": 783, "contest_start_time": 1670121000, "contest_duration": 5400, "user_num": 5085, "question_slugs": ["circular-sentence", "divide-players-into-teams-of-equal-skill", "minimum-score-of-a-path-between-two-cities", "divide-nodes-into-the-maximum-number-of-groups"]}, {"contest_title": "\u7b2c 323 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 323", "contest_title_slug": "weekly-contest-323", "contest_id": 785, "contest_start_time": 1670725800, "contest_duration": 5400, "user_num": 4671, "question_slugs": ["delete-greatest-value-in-each-row", "longest-square-streak-in-an-array", "design-memory-allocator", "maximum-number-of-points-from-grid-queries"]}, {"contest_title": "\u7b2c 324 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 324", "contest_title_slug": "weekly-contest-324", "contest_id": 790, "contest_start_time": 1671330600, "contest_duration": 5400, "user_num": 4167, "question_slugs": ["count-pairs-of-similar-strings", "smallest-value-after-replacing-with-sum-of-prime-factors", "add-edges-to-make-degrees-of-all-nodes-even", "cycle-length-queries-in-a-tree"]}, {"contest_title": "\u7b2c 325 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 325", "contest_title_slug": "weekly-contest-325", "contest_id": 795, "contest_start_time": 1671935400, "contest_duration": 5400, "user_num": 3530, "question_slugs": ["shortest-distance-to-target-string-in-a-circular-array", "take-k-of-each-character-from-left-and-right", "maximum-tastiness-of-candy-basket", "number-of-great-partitions"]}, {"contest_title": "\u7b2c 326 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 326", "contest_title_slug": "weekly-contest-326", "contest_id": 799, "contest_start_time": 1672540200, "contest_duration": 5400, "user_num": 3873, "question_slugs": ["count-the-digits-that-divide-a-number", "distinct-prime-factors-of-product-of-array", "partition-string-into-substrings-with-values-at-most-k", "closest-prime-numbers-in-range"]}, {"contest_title": "\u7b2c 327 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 327", "contest_title_slug": "weekly-contest-327", "contest_id": 801, "contest_start_time": 1673145000, "contest_duration": 5400, "user_num": 4518, "question_slugs": ["maximum-count-of-positive-integer-and-negative-integer", "maximal-score-after-applying-k-operations", "make-number-of-distinct-characters-equal", "time-to-cross-a-bridge"]}, {"contest_title": "\u7b2c 328 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 328", "contest_title_slug": "weekly-contest-328", "contest_id": 805, "contest_start_time": 1673749800, "contest_duration": 5400, "user_num": 4776, "question_slugs": ["difference-between-element-sum-and-digit-sum-of-an-array", "increment-submatrices-by-one", "count-the-number-of-good-subarrays", "difference-between-maximum-and-minimum-price-sum"]}, {"contest_title": "\u7b2c 329 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 329", "contest_title_slug": "weekly-contest-329", "contest_id": 807, "contest_start_time": 1674354600, "contest_duration": 5400, "user_num": 2591, "question_slugs": ["alternating-digit-sum", "sort-the-students-by-their-kth-score", "apply-bitwise-operations-to-make-strings-equal", "minimum-cost-to-split-an-array"]}, {"contest_title": "\u7b2c 330 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 330", "contest_title_slug": "weekly-contest-330", "contest_id": 811, "contest_start_time": 1674959400, "contest_duration": 5400, "user_num": 3399, "question_slugs": ["count-distinct-numbers-on-board", "count-collisions-of-monkeys-on-a-polygon", "put-marbles-in-bags", "count-increasing-quadruplets"]}, {"contest_title": "\u7b2c 331 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 331", "contest_title_slug": "weekly-contest-331", "contest_id": 813, "contest_start_time": 1675564200, "contest_duration": 5400, "user_num": 4256, "question_slugs": ["take-gifts-from-the-richest-pile", "count-vowel-strings-in-ranges", "house-robber-iv", "rearranging-fruits"]}, {"contest_title": "\u7b2c 332 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 332", "contest_title_slug": "weekly-contest-332", "contest_id": 817, "contest_start_time": 1676169000, "contest_duration": 5400, "user_num": 4547, "question_slugs": ["find-the-array-concatenation-value", "count-the-number-of-fair-pairs", "substring-xor-queries", "subsequence-with-the-minimum-score"]}, {"contest_title": "\u7b2c 333 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 333", "contest_title_slug": "weekly-contest-333", "contest_id": 819, "contest_start_time": 1676773800, "contest_duration": 5400, "user_num": 4969, "question_slugs": ["merge-two-2d-arrays-by-summing-values", "minimum-operations-to-reduce-an-integer-to-0", "count-the-number-of-square-free-subsets", "find-the-string-with-lcp"]}, {"contest_title": "\u7b2c 334 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 334", "contest_title_slug": "weekly-contest-334", "contest_id": 823, "contest_start_time": 1677378600, "contest_duration": 5400, "user_num": 5501, "question_slugs": ["left-and-right-sum-differences", "find-the-divisibility-array-of-a-string", "find-the-maximum-number-of-marked-indices", "minimum-time-to-visit-a-cell-in-a-grid"]}, {"contest_title": "\u7b2c 335 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 335", "contest_title_slug": "weekly-contest-335", "contest_id": 825, "contest_start_time": 1677983400, "contest_duration": 5400, "user_num": 6019, "question_slugs": ["pass-the-pillow", "kth-largest-sum-in-a-binary-tree", "split-the-array-to-make-coprime-products", "number-of-ways-to-earn-points"]}, {"contest_title": "\u7b2c 336 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 336", "contest_title_slug": "weekly-contest-336", "contest_id": 833, "contest_start_time": 1678588200, "contest_duration": 5400, "user_num": 5897, "question_slugs": ["count-the-number-of-vowel-strings-in-range", "rearrange-array-to-maximize-prefix-score", "count-the-number-of-beautiful-subarrays", "minimum-time-to-complete-all-tasks"]}, {"contest_title": "\u7b2c 337 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 337", "contest_title_slug": "weekly-contest-337", "contest_id": 839, "contest_start_time": 1679193000, "contest_duration": 5400, "user_num": 5628, "question_slugs": ["number-of-even-and-odd-bits", "check-knight-tour-configuration", "the-number-of-beautiful-subsets", "smallest-missing-non-negative-integer-after-operations"]}, {"contest_title": "\u7b2c 338 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 338", "contest_title_slug": "weekly-contest-338", "contest_id": 843, "contest_start_time": 1679797800, "contest_duration": 5400, "user_num": 5594, "question_slugs": ["k-items-with-the-maximum-sum", "prime-subtraction-operation", "minimum-operations-to-make-all-array-elements-equal", "collect-coins-in-a-tree"]}, {"contest_title": "\u7b2c 339 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 339", "contest_title_slug": "weekly-contest-339", "contest_id": 850, "contest_start_time": 1680402600, "contest_duration": 5400, "user_num": 5180, "question_slugs": ["find-the-longest-balanced-substring-of-a-binary-string", "convert-an-array-into-a-2d-array-with-conditions", "mice-and-cheese", "minimum-reverse-operations"]}, {"contest_title": "\u7b2c 340 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 340", "contest_title_slug": "weekly-contest-340", "contest_id": 854, "contest_start_time": 1681007400, "contest_duration": 5400, "user_num": 4937, "question_slugs": ["prime-in-diagonal", "sum-of-distances", "minimize-the-maximum-difference-of-pairs", "minimum-number-of-visited-cells-in-a-grid"]}, {"contest_title": "\u7b2c 341 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 341", "contest_title_slug": "weekly-contest-341", "contest_id": 856, "contest_start_time": 1681612200, "contest_duration": 5400, "user_num": 4792, "question_slugs": ["row-with-maximum-ones", "find-the-maximum-divisibility-score", "minimum-additions-to-make-valid-string", "minimize-the-total-price-of-the-trips"]}, {"contest_title": "\u7b2c 342 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 342", "contest_title_slug": "weekly-contest-342", "contest_id": 860, "contest_start_time": 1682217000, "contest_duration": 5400, "user_num": 3702, "question_slugs": ["calculate-delayed-arrival-time", "sum-multiples", "sliding-subarray-beauty", "minimum-number-of-operations-to-make-all-array-elements-equal-to-1"]}, {"contest_title": "\u7b2c 343 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 343", "contest_title_slug": "weekly-contest-343", "contest_id": 863, "contest_start_time": 1682821800, "contest_duration": 5400, "user_num": 3313, "question_slugs": ["determine-the-winner-of-a-bowling-game", "first-completely-painted-row-or-column", "minimum-cost-of-a-path-with-special-roads", "lexicographically-smallest-beautiful-string"]}, {"contest_title": "\u7b2c 344 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 344", "contest_title_slug": "weekly-contest-344", "contest_id": 867, "contest_start_time": 1683426600, "contest_duration": 5400, "user_num": 3986, "question_slugs": ["find-the-distinct-difference-array", "frequency-tracker", "number-of-adjacent-elements-with-the-same-color", "make-costs-of-paths-equal-in-a-binary-tree"]}, {"contest_title": "\u7b2c 345 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 345", "contest_title_slug": "weekly-contest-345", "contest_id": 870, "contest_start_time": 1684031400, "contest_duration": 5400, "user_num": 4165, "question_slugs": ["find-the-losers-of-the-circular-game", "neighboring-bitwise-xor", "maximum-number-of-moves-in-a-grid", "count-the-number-of-complete-components"]}, {"contest_title": "\u7b2c 346 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 346", "contest_title_slug": "weekly-contest-346", "contest_id": 874, "contest_start_time": 1684636200, "contest_duration": 5400, "user_num": 4035, "question_slugs": ["minimum-string-length-after-removing-substrings", "lexicographically-smallest-palindrome", "find-the-punishment-number-of-an-integer", "modify-graph-edge-weights"]}, {"contest_title": "\u7b2c 347 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 347", "contest_title_slug": "weekly-contest-347", "contest_id": 876, "contest_start_time": 1685241000, "contest_duration": 5400, "user_num": 3836, "question_slugs": ["remove-trailing-zeros-from-a-string", "difference-of-number-of-distinct-values-on-diagonals", "minimum-cost-to-make-all-characters-equal", "maximum-strictly-increasing-cells-in-a-matrix"]}, {"contest_title": "\u7b2c 348 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 348", "contest_title_slug": "weekly-contest-348", "contest_id": 880, "contest_start_time": 1685845800, "contest_duration": 5400, "user_num": 3909, "question_slugs": ["minimize-string-length", "semi-ordered-permutation", "sum-of-matrix-after-queries", "count-of-integers"]}, {"contest_title": "\u7b2c 349 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 349", "contest_title_slug": "weekly-contest-349", "contest_id": 882, "contest_start_time": 1686450600, "contest_duration": 5400, "user_num": 3714, "question_slugs": ["neither-minimum-nor-maximum", "lexicographically-smallest-string-after-substring-operation", "collecting-chocolates", "maximum-sum-queries"]}, {"contest_title": "\u7b2c 350 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 350", "contest_title_slug": "weekly-contest-350", "contest_id": 886, "contest_start_time": 1687055400, "contest_duration": 5400, "user_num": 3580, "question_slugs": ["total-distance-traveled", "find-the-value-of-the-partition", "special-permutations", "painting-the-walls"]}, {"contest_title": "\u7b2c 351 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 351", "contest_title_slug": "weekly-contest-351", "contest_id": 888, "contest_start_time": 1687660200, "contest_duration": 5400, "user_num": 2471, "question_slugs": ["number-of-beautiful-pairs", "minimum-operations-to-make-the-integer-zero", "ways-to-split-array-into-good-subarrays", "robot-collisions"]}, {"contest_title": "\u7b2c 352 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 352", "contest_title_slug": "weekly-contest-352", "contest_id": 892, "contest_start_time": 1688265000, "contest_duration": 5400, "user_num": 3437, "question_slugs": ["longest-even-odd-subarray-with-threshold", "prime-pairs-with-target-sum", "continuous-subarrays", "sum-of-imbalance-numbers-of-all-subarrays"]}, {"contest_title": "\u7b2c 353 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 353", "contest_title_slug": "weekly-contest-353", "contest_id": 894, "contest_start_time": 1688869800, "contest_duration": 5400, "user_num": 4113, "question_slugs": ["find-the-maximum-achievable-number", "maximum-number-of-jumps-to-reach-the-last-index", "longest-non-decreasing-subarray-from-two-arrays", "apply-operations-to-make-all-array-elements-equal-to-zero"]}, {"contest_title": "\u7b2c 354 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 354", "contest_title_slug": "weekly-contest-354", "contest_id": 898, "contest_start_time": 1689474600, "contest_duration": 5400, "user_num": 3957, "question_slugs": ["sum-of-squares-of-special-elements", "maximum-beauty-of-an-array-after-applying-operation", "minimum-index-of-a-valid-split", "length-of-the-longest-valid-substring"]}, {"contest_title": "\u7b2c 355 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 355", "contest_title_slug": "weekly-contest-355", "contest_id": 900, "contest_start_time": 1690079400, "contest_duration": 5400, "user_num": 4112, "question_slugs": ["split-strings-by-separator", "largest-element-in-an-array-after-merge-operations", "maximum-number-of-groups-with-increasing-length", "count-paths-that-can-form-a-palindrome-in-a-tree"]}, {"contest_title": "\u7b2c 356 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 356", "contest_title_slug": "weekly-contest-356", "contest_id": 904, "contest_start_time": 1690684200, "contest_duration": 5400, "user_num": 4082, "question_slugs": ["number-of-employees-who-met-the-target", "count-complete-subarrays-in-an-array", "shortest-string-that-contains-three-strings", "count-stepping-numbers-in-range"]}, {"contest_title": "\u7b2c 357 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 357", "contest_title_slug": "weekly-contest-357", "contest_id": 906, "contest_start_time": 1691289000, "contest_duration": 5400, "user_num": 4265, "question_slugs": ["faulty-keyboard", "check-if-it-is-possible-to-split-array", "find-the-safest-path-in-a-grid", "maximum-elegance-of-a-k-length-subsequence"]}, {"contest_title": "\u7b2c 358 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 358", "contest_title_slug": "weekly-contest-358", "contest_id": 910, "contest_start_time": 1691893800, "contest_duration": 5400, "user_num": 4475, "question_slugs": ["max-pair-sum-in-an-array", "double-a-number-represented-as-a-linked-list", "minimum-absolute-difference-between-elements-with-constraint", "apply-operations-to-maximize-score"]}, {"contest_title": "\u7b2c 359 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 359", "contest_title_slug": "weekly-contest-359", "contest_id": 913, "contest_start_time": 1692498600, "contest_duration": 5400, "user_num": 4101, "question_slugs": ["check-if-a-string-is-an-acronym-of-words", "determine-the-minimum-sum-of-a-k-avoiding-array", "maximize-the-profit-as-the-salesman", "find-the-longest-equal-subarray"]}, {"contest_title": "\u7b2c 360 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 360", "contest_title_slug": "weekly-contest-360", "contest_id": 918, "contest_start_time": 1693103400, "contest_duration": 5400, "user_num": 4496, "question_slugs": ["furthest-point-from-origin", "find-the-minimum-possible-sum-of-a-beautiful-array", "minimum-operations-to-form-subsequence-with-target-sum", "maximize-value-of-function-in-a-ball-passing-game"]}, {"contest_title": "\u7b2c 361 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 361", "contest_title_slug": "weekly-contest-361", "contest_id": 920, "contest_start_time": 1693708200, "contest_duration": 5400, "user_num": 4170, "question_slugs": ["count-symmetric-integers", "minimum-operations-to-make-a-special-number", "count-of-interesting-subarrays", "minimum-edge-weight-equilibrium-queries-in-a-tree"]}, {"contest_title": "\u7b2c 362 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 362", "contest_title_slug": "weekly-contest-362", "contest_id": 924, "contest_start_time": 1694313000, "contest_duration": 5400, "user_num": 4800, "question_slugs": ["points-that-intersect-with-cars", "determine-if-a-cell-is-reachable-at-a-given-time", "minimum-moves-to-spread-stones-over-grid", "string-transformation"]}, {"contest_title": "\u7b2c 363 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 363", "contest_title_slug": "weekly-contest-363", "contest_id": 926, "contest_start_time": 1694917800, "contest_duration": 5400, "user_num": 4768, "question_slugs": ["sum-of-values-at-indices-with-k-set-bits", "happy-students", "maximum-number-of-alloys", "maximum-element-sum-of-a-complete-subset-of-indices"]}, {"contest_title": "\u7b2c 364 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 364", "contest_title_slug": "weekly-contest-364", "contest_id": 930, "contest_start_time": 1695522600, "contest_duration": 5400, "user_num": 4304, "question_slugs": ["maximum-odd-binary-number", "beautiful-towers-i", "beautiful-towers-ii", "count-valid-paths-in-a-tree"]}, {"contest_title": "\u7b2c 365 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 365", "contest_title_slug": "weekly-contest-365", "contest_id": 932, "contest_start_time": 1696127400, "contest_duration": 5400, "user_num": 2909, "question_slugs": ["maximum-value-of-an-ordered-triplet-i", "maximum-value-of-an-ordered-triplet-ii", "minimum-size-subarray-in-infinite-array", "count-visited-nodes-in-a-directed-graph"]}, {"contest_title": "\u7b2c 366 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 366", "contest_title_slug": "weekly-contest-366", "contest_id": 936, "contest_start_time": 1696732200, "contest_duration": 5400, "user_num": 2790, "question_slugs": ["divisible-and-non-divisible-sums-difference", "minimum-processing-time", "apply-operations-to-make-two-strings-equal", "apply-operations-on-array-to-maximize-sum-of-squares"]}, {"contest_title": "\u7b2c 367 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 367", "contest_title_slug": "weekly-contest-367", "contest_id": 938, "contest_start_time": 1697337000, "contest_duration": 5400, "user_num": 4317, "question_slugs": ["find-indices-with-index-and-value-difference-i", "shortest-and-lexicographically-smallest-beautiful-string", "find-indices-with-index-and-value-difference-ii", "construct-product-matrix"]}, {"contest_title": "\u7b2c 368 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 368", "contest_title_slug": "weekly-contest-368", "contest_id": 942, "contest_start_time": 1697941800, "contest_duration": 5400, "user_num": 5002, "question_slugs": ["minimum-sum-of-mountain-triplets-i", "minimum-sum-of-mountain-triplets-ii", "minimum-number-of-groups-to-create-a-valid-assignment", "minimum-changes-to-make-k-semi-palindromes"]}, {"contest_title": "\u7b2c 369 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 369", "contest_title_slug": "weekly-contest-369", "contest_id": 945, "contest_start_time": 1698546600, "contest_duration": 5400, "user_num": 4121, "question_slugs": ["find-the-k-or-of-an-array", "minimum-equal-sum-of-two-arrays-after-replacing-zeros", "minimum-increment-operations-to-make-array-beautiful", "maximum-points-after-collecting-coins-from-all-nodes"]}, {"contest_title": "\u7b2c 370 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 370", "contest_title_slug": "weekly-contest-370", "contest_id": 950, "contest_start_time": 1699151400, "contest_duration": 5400, "user_num": 3983, "question_slugs": ["find-champion-i", "find-champion-ii", "maximum-score-after-applying-operations-on-a-tree", "maximum-balanced-subsequence-sum"]}, {"contest_title": "\u7b2c 371 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 371", "contest_title_slug": "weekly-contest-371", "contest_id": 952, "contest_start_time": 1699756200, "contest_duration": 5400, "user_num": 3637, "question_slugs": ["maximum-strong-pair-xor-i", "high-access-employees", "minimum-operations-to-maximize-last-elements-in-arrays", "maximum-strong-pair-xor-ii"]}, {"contest_title": "\u7b2c 372 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 372", "contest_title_slug": "weekly-contest-372", "contest_id": 956, "contest_start_time": 1700361000, "contest_duration": 5400, "user_num": 3920, "question_slugs": ["make-three-strings-equal", "separate-black-and-white-balls", "maximum-xor-product", "find-building-where-alice-and-bob-can-meet"]}, {"contest_title": "\u7b2c 373 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 373", "contest_title_slug": "weekly-contest-373", "contest_id": 958, "contest_start_time": 1700965800, "contest_duration": 5400, "user_num": 3577, "question_slugs": ["matrix-similarity-after-cyclic-shifts", "count-beautiful-substrings-i", "make-lexicographically-smallest-array-by-swapping-elements", "count-beautiful-substrings-ii"]}, {"contest_title": "\u7b2c 374 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 374", "contest_title_slug": "weekly-contest-374", "contest_id": 962, "contest_start_time": 1701570600, "contest_duration": 5400, "user_num": 4053, "question_slugs": ["find-the-peaks", "minimum-number-of-coins-to-be-added", "count-complete-substrings", "count-the-number-of-infection-sequences"]}, {"contest_title": "\u7b2c 375 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 375", "contest_title_slug": "weekly-contest-375", "contest_id": 964, "contest_start_time": 1702175400, "contest_duration": 5400, "user_num": 3518, "question_slugs": ["count-tested-devices-after-test-operations", "double-modular-exponentiation", "count-subarrays-where-max-element-appears-at-least-k-times", "count-the-number-of-good-partitions"]}, {"contest_title": "\u7b2c 376 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 376", "contest_title_slug": "weekly-contest-376", "contest_id": 968, "contest_start_time": 1702780200, "contest_duration": 5400, "user_num": 3409, "question_slugs": ["find-missing-and-repeated-values", "divide-array-into-arrays-with-max-difference", "minimum-cost-to-make-array-equalindromic", "apply-operations-to-maximize-frequency-score"]}, {"contest_title": "\u7b2c 377 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 377", "contest_title_slug": "weekly-contest-377", "contest_id": 970, "contest_start_time": 1703385000, "contest_duration": 5400, "user_num": 3148, "question_slugs": ["minimum-number-game", "maximum-square-area-by-removing-fences-from-a-field", "minimum-cost-to-convert-string-i", "minimum-cost-to-convert-string-ii"]}, {"contest_title": "\u7b2c 378 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 378", "contest_title_slug": "weekly-contest-378", "contest_id": 974, "contest_start_time": 1703989800, "contest_duration": 5400, "user_num": 2747, "question_slugs": ["check-if-bitwise-or-has-trailing-zeros", "find-longest-special-substring-that-occurs-thrice-i", "find-longest-special-substring-that-occurs-thrice-ii", "palindrome-rearrangement-queries"]}, {"contest_title": "\u7b2c 379 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 379", "contest_title_slug": "weekly-contest-379", "contest_id": 976, "contest_start_time": 1704594600, "contest_duration": 5400, "user_num": 3117, "question_slugs": ["maximum-area-of-longest-diagonal-rectangle", "minimum-moves-to-capture-the-queen", "maximum-size-of-a-set-after-removals", "maximize-the-number-of-partitions-after-operations"]}, {"contest_title": "\u7b2c 380 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 380", "contest_title_slug": "weekly-contest-380", "contest_id": 980, "contest_start_time": 1705199400, "contest_duration": 5400, "user_num": 3325, "question_slugs": ["count-elements-with-maximum-frequency", "find-beautiful-indices-in-the-given-array-i", "maximum-number-that-sum-of-the-prices-is-less-than-or-equal-to-k", "find-beautiful-indices-in-the-given-array-ii"]}, {"contest_title": "\u7b2c 381 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 381", "contest_title_slug": "weekly-contest-381", "contest_id": 982, "contest_start_time": 1705804200, "contest_duration": 5400, "user_num": 3737, "question_slugs": ["minimum-number-of-pushes-to-type-word-i", "count-the-number-of-houses-at-a-certain-distance-i", "minimum-number-of-pushes-to-type-word-ii", "count-the-number-of-houses-at-a-certain-distance-ii"]}, {"contest_title": "\u7b2c 382 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 382", "contest_title_slug": "weekly-contest-382", "contest_id": 986, "contest_start_time": 1706409000, "contest_duration": 5400, "user_num": 3134, "question_slugs": ["number-of-changing-keys", "find-the-maximum-number-of-elements-in-subset", "alice-and-bob-playing-flower-game", "minimize-or-of-remaining-elements-using-operations"]}, {"contest_title": "\u7b2c 383 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 383", "contest_title_slug": "weekly-contest-383", "contest_id": 988, "contest_start_time": 1707013800, "contest_duration": 5400, "user_num": 2691, "question_slugs": ["ant-on-the-boundary", "minimum-time-to-revert-word-to-initial-state-i", "find-the-grid-of-region-average", "minimum-time-to-revert-word-to-initial-state-ii"]}, {"contest_title": "\u7b2c 384 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 384", "contest_title_slug": "weekly-contest-384", "contest_id": 992, "contest_start_time": 1707618600, "contest_duration": 5400, "user_num": 1652, "question_slugs": ["modify-the-matrix", "number-of-subarrays-that-match-a-pattern-i", "maximum-palindromes-after-operations", "number-of-subarrays-that-match-a-pattern-ii"]}, {"contest_title": "\u7b2c 385 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 385", "contest_title_slug": "weekly-contest-385", "contest_id": 994, "contest_start_time": 1708223400, "contest_duration": 5400, "user_num": 2382, "question_slugs": ["count-prefix-and-suffix-pairs-i", "find-the-length-of-the-longest-common-prefix", "most-frequent-prime", "count-prefix-and-suffix-pairs-ii"]}, {"contest_title": "\u7b2c 386 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 386", "contest_title_slug": "weekly-contest-386", "contest_id": 998, "contest_start_time": 1708828200, "contest_duration": 5400, "user_num": 2731, "question_slugs": ["split-the-array", "find-the-largest-area-of-square-inside-two-rectangles", "earliest-second-to-mark-indices-i", "earliest-second-to-mark-indices-ii"]}, {"contest_title": "\u7b2c 387 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 387", "contest_title_slug": "weekly-contest-387", "contest_id": 1000, "contest_start_time": 1709433000, "contest_duration": 5400, "user_num": 3694, "question_slugs": ["distribute-elements-into-two-arrays-i", "count-submatrices-with-top-left-element-and-sum-less-than-k", "minimum-operations-to-write-the-letter-y-on-a-grid", "distribute-elements-into-two-arrays-ii"]}, {"contest_title": "\u7b2c 388 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 388", "contest_title_slug": "weekly-contest-388", "contest_id": 1004, "contest_start_time": 1710037800, "contest_duration": 5400, "user_num": 4291, "question_slugs": ["apple-redistribution-into-boxes", "maximize-happiness-of-selected-children", "shortest-uncommon-substring-in-an-array", "maximum-strength-of-k-disjoint-subarrays"]}, {"contest_title": "\u7b2c 389 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 389", "contest_title_slug": "weekly-contest-389", "contest_id": 1006, "contest_start_time": 1710642600, "contest_duration": 5400, "user_num": 4561, "question_slugs": ["existence-of-a-substring-in-a-string-and-its-reverse", "count-substrings-starting-and-ending-with-given-character", "minimum-deletions-to-make-string-k-special", "minimum-moves-to-pick-k-ones"]}, {"contest_title": "\u7b2c 390 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 390", "contest_title_slug": "weekly-contest-390", "contest_id": 1011, "contest_start_time": 1711247400, "contest_duration": 5400, "user_num": 4817, "question_slugs": ["maximum-length-substring-with-two-occurrences", "apply-operations-to-make-sum-of-array-greater-than-or-equal-to-k", "most-frequent-ids", "longest-common-suffix-queries"]}, {"contest_title": "\u7b2c 391 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 391", "contest_title_slug": "weekly-contest-391", "contest_id": 1014, "contest_start_time": 1711852200, "contest_duration": 5400, "user_num": 4180, "question_slugs": ["harshad-number", "water-bottles-ii", "count-alternating-subarrays", "minimize-manhattan-distances"]}, {"contest_title": "\u7b2c 392 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 392", "contest_title_slug": "weekly-contest-392", "contest_id": 1018, "contest_start_time": 1712457000, "contest_duration": 5400, "user_num": 3193, "question_slugs": ["longest-strictly-increasing-or-strictly-decreasing-subarray", "lexicographically-smallest-string-after-operations-with-constraint", "minimum-operations-to-make-median-of-array-equal-to-k", "minimum-cost-walk-in-weighted-graph"]}, {"contest_title": "\u7b2c 393 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 393", "contest_title_slug": "weekly-contest-393", "contest_id": 1020, "contest_start_time": 1713061800, "contest_duration": 5400, "user_num": 4218, "question_slugs": ["latest-time-you-can-obtain-after-replacing-characters", "maximum-prime-difference", "kth-smallest-amount-with-single-denomination-combination", "minimum-sum-of-values-by-dividing-array"]}, {"contest_title": "\u7b2c 394 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 394", "contest_title_slug": "weekly-contest-394", "contest_id": 1024, "contest_start_time": 1713666600, "contest_duration": 5400, "user_num": 3957, "question_slugs": ["count-the-number-of-special-characters-i", "count-the-number-of-special-characters-ii", "minimum-number-of-operations-to-satisfy-conditions", "find-edges-in-shortest-paths"]}, {"contest_title": "\u7b2c 395 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 395", "contest_title_slug": "weekly-contest-395", "contest_id": 1026, "contest_start_time": 1714271400, "contest_duration": 5400, "user_num": 2968, "question_slugs": ["find-the-integer-added-to-array-i", "find-the-integer-added-to-array-ii", "minimum-array-end", "find-the-median-of-the-uniqueness-array"]}, {"contest_title": "\u7b2c 396 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 396", "contest_title_slug": "weekly-contest-396", "contest_id": 1030, "contest_start_time": 1714876200, "contest_duration": 5400, "user_num": 2931, "question_slugs": ["valid-word", "minimum-number-of-operations-to-make-word-k-periodic", "minimum-length-of-anagram-concatenation", "minimum-cost-to-equalize-array"]}, {"contest_title": "\u7b2c 1 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 1", "contest_title_slug": "biweekly-contest-1", "contest_id": 70, "contest_start_time": 1559399400, "contest_duration": 7200, "user_num": 197, "question_slugs": ["fixed-point", "index-pairs-of-a-string", "campus-bikes-ii", "digit-count-in-range"]}, {"contest_title": "\u7b2c 2 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 2", "contest_title_slug": "biweekly-contest-2", "contest_id": 73, "contest_start_time": 1560609000, "contest_duration": 5400, "user_num": 256, "question_slugs": ["sum-of-digits-in-the-minimum-number", "high-five", "brace-expansion", "confusing-number-ii"]}, {"contest_title": "\u7b2c 3 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 3", "contest_title_slug": "biweekly-contest-3", "contest_id": 85, "contest_start_time": 1561818600, "contest_duration": 5400, "user_num": 312, "question_slugs": ["two-sum-less-than-k", "find-k-length-substrings-with-no-repeated-characters", "the-earliest-moment-when-everyone-become-friends", "path-with-maximum-minimum-value"]}, {"contest_title": "\u7b2c 4 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 4", "contest_title_slug": "biweekly-contest-4", "contest_id": 88, "contest_start_time": 1563028200, "contest_duration": 5400, 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5400, "user_num": 897, "question_slugs": ["decompress-run-length-encoded-list", "matrix-block-sum", "sum-of-nodes-with-even-valued-grandparent", "distinct-echo-substrings"]}, {"contest_title": "\u7b2c 18 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 18", "contest_title_slug": "biweekly-contest-18", "contest_id": 143, "contest_start_time": 1579962600, "contest_duration": 5400, "user_num": 587, "question_slugs": ["rank-transform-of-an-array", "break-a-palindrome", "sort-the-matrix-diagonally", "reverse-subarray-to-maximize-array-value"]}, {"contest_title": "\u7b2c 19 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 19", "contest_title_slug": "biweekly-contest-19", "contest_id": 146, "contest_start_time": 1581172200, "contest_duration": 5400, "user_num": 1120, "question_slugs": ["number-of-steps-to-reduce-a-number-to-zero", "number-of-sub-arrays-of-size-k-and-average-greater-than-or-equal-to-threshold", "angle-between-hands-of-a-clock", "jump-game-iv"]}, 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"biweekly-contest-22", "contest_id": 163, "contest_start_time": 1584801000, "contest_duration": 5400, "user_num": 2042, "question_slugs": ["find-the-distance-value-between-two-arrays", "cinema-seat-allocation", "sort-integers-by-the-power-value", "pizza-with-3n-slices"]}, {"contest_title": "\u7b2c 23 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 23", "contest_title_slug": "biweekly-contest-23", "contest_id": 169, "contest_start_time": 1586010600, "contest_duration": 5400, "user_num": 2045, "question_slugs": ["count-largest-group", "construct-k-palindrome-strings", "circle-and-rectangle-overlapping", "reducing-dishes"]}, {"contest_title": "\u7b2c 24 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 24", "contest_title_slug": "biweekly-contest-24", "contest_id": 178, "contest_start_time": 1587220200, "contest_duration": 5400, "user_num": 1898, "question_slugs": ["minimum-value-to-get-positive-step-by-step-sum", 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["count-odd-numbers-in-an-interval-range", "number-of-sub-arrays-with-odd-sum", "number-of-good-ways-to-split-a-string", "minimum-number-of-increments-on-subarrays-to-form-a-target-array"]}, {"contest_title": "\u7b2c 32 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 32", "contest_title_slug": "biweekly-contest-32", "contest_id": 237, "contest_start_time": 1596897000, "contest_duration": 5400, "user_num": 2957, "question_slugs": ["kth-missing-positive-number", "can-convert-string-in-k-moves", "minimum-insertions-to-balance-a-parentheses-string", "find-longest-awesome-substring"]}, {"contest_title": "\u7b2c 33 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 33", "contest_title_slug": "biweekly-contest-33", "contest_id": 241, "contest_start_time": 1598106600, "contest_duration": 5400, "user_num": 3304, "question_slugs": ["thousand-separator", "minimum-number-of-vertices-to-reach-all-nodes", "minimum-numbers-of-function-calls-to-make-target-array", "detect-cycles-in-2d-grid"]}, {"contest_title": "\u7b2c 34 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 34", "contest_title_slug": "biweekly-contest-34", "contest_id": 256, "contest_start_time": 1599316200, "contest_duration": 5400, "user_num": 2842, "question_slugs": ["matrix-diagonal-sum", "number-of-ways-to-split-a-string", "shortest-subarray-to-be-removed-to-make-array-sorted", "count-all-possible-routes"]}, {"contest_title": "\u7b2c 35 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 35", "contest_title_slug": "biweekly-contest-35", "contest_id": 266, "contest_start_time": 1600525800, "contest_duration": 5400, "user_num": 2839, "question_slugs": ["sum-of-all-odd-length-subarrays", "maximum-sum-obtained-of-any-permutation", "make-sum-divisible-by-p", "strange-printer-ii"]}, {"contest_title": "\u7b2c 36 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 36", "contest_title_slug": "biweekly-contest-36", "contest_id": 288, "contest_start_time": 1601735400, "contest_duration": 5400, "user_num": 2204, "question_slugs": ["design-parking-system", "alert-using-same-key-card-three-or-more-times-in-a-one-hour-period", "find-valid-matrix-given-row-and-column-sums", "find-servers-that-handled-most-number-of-requests"]}, {"contest_title": "\u7b2c 37 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 37", "contest_title_slug": "biweekly-contest-37", "contest_id": 294, "contest_start_time": 1602945000, "contest_duration": 5400, "user_num": 2104, "question_slugs": ["mean-of-array-after-removing-some-elements", "coordinate-with-maximum-network-quality", "number-of-sets-of-k-non-overlapping-line-segments", "fancy-sequence"]}, {"contest_title": "\u7b2c 38 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 38", "contest_title_slug": "biweekly-contest-38", "contest_id": 300, "contest_start_time": 1604154600, "contest_duration": 5400, "user_num": 2004, "question_slugs": ["sort-array-by-increasing-frequency", "widest-vertical-area-between-two-points-containing-no-points", "count-substrings-that-differ-by-one-character", "number-of-ways-to-form-a-target-string-given-a-dictionary"]}, {"contest_title": "\u7b2c 39 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 39", "contest_title_slug": "biweekly-contest-39", "contest_id": 306, "contest_start_time": 1605364200, "contest_duration": 5400, "user_num": 2069, "question_slugs": ["defuse-the-bomb", "minimum-deletions-to-make-string-balanced", "minimum-jumps-to-reach-home", "distribute-repeating-integers"]}, {"contest_title": "\u7b2c 40 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 40", "contest_title_slug": "biweekly-contest-40", "contest_id": 312, "contest_start_time": 1606573800, "contest_duration": 5400, "user_num": 1891, "question_slugs": ["maximum-repeating-substring", "merge-in-between-linked-lists", "design-front-middle-back-queue", "minimum-number-of-removals-to-make-mountain-array"]}, {"contest_title": "\u7b2c 41 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 41", "contest_title_slug": "biweekly-contest-41", "contest_id": 318, "contest_start_time": 1607783400, "contest_duration": 5400, "user_num": 1660, "question_slugs": ["count-the-number-of-consistent-strings", "sum-of-absolute-differences-in-a-sorted-array", "stone-game-vi", "delivering-boxes-from-storage-to-ports"]}, {"contest_title": "\u7b2c 42 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 42", "contest_title_slug": "biweekly-contest-42", "contest_id": 325, "contest_start_time": 1608993000, "contest_duration": 5400, "user_num": 1578, "question_slugs": ["number-of-students-unable-to-eat-lunch", "average-waiting-time", "maximum-binary-string-after-change", "minimum-adjacent-swaps-for-k-consecutive-ones"]}, {"contest_title": "\u7b2c 43 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 43", "contest_title_slug": "biweekly-contest-43", "contest_id": 331, "contest_start_time": 1610202600, "contest_duration": 5400, "user_num": 1631, "question_slugs": ["calculate-money-in-leetcode-bank", "maximum-score-from-removing-substrings", "construct-the-lexicographically-largest-valid-sequence", "number-of-ways-to-reconstruct-a-tree"]}, {"contest_title": "\u7b2c 44 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 44", "contest_title_slug": "biweekly-contest-44", "contest_id": 337, "contest_start_time": 1611412200, "contest_duration": 5400, "user_num": 1826, "question_slugs": ["find-the-highest-altitude", "minimum-number-of-people-to-teach", "decode-xored-permutation", "count-ways-to-make-array-with-product"]}, {"contest_title": "\u7b2c 45 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 45", "contest_title_slug": "biweekly-contest-45", "contest_id": 343, "contest_start_time": 1612621800, "contest_duration": 5400, "user_num": 1676, "question_slugs": ["sum-of-unique-elements", "maximum-absolute-sum-of-any-subarray", "minimum-length-of-string-after-deleting-similar-ends", "maximum-number-of-events-that-can-be-attended-ii"]}, {"contest_title": "\u7b2c 46 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 46", "contest_title_slug": "biweekly-contest-46", "contest_id": 349, "contest_start_time": 1613831400, "contest_duration": 5400, "user_num": 1647, "question_slugs": ["longest-nice-substring", "form-array-by-concatenating-subarrays-of-another-array", "map-of-highest-peak", "tree-of-coprimes"]}, {"contest_title": "\u7b2c 47 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 47", "contest_title_slug": "biweekly-contest-47", "contest_id": 355, "contest_start_time": 1615041000, "contest_duration": 5400, "user_num": 3085, "question_slugs": ["find-nearest-point-that-has-the-same-x-or-y-coordinate", "check-if-number-is-a-sum-of-powers-of-three", "sum-of-beauty-of-all-substrings", "count-pairs-of-nodes"]}, {"contest_title": "\u7b2c 48 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 48", "contest_title_slug": "biweekly-contest-48", "contest_id": 362, "contest_start_time": 1616250600, "contest_duration": 5400, "user_num": 2853, "question_slugs": ["second-largest-digit-in-a-string", "design-authentication-manager", "maximum-number-of-consecutive-values-you-can-make", "maximize-score-after-n-operations"]}, {"contest_title": "\u7b2c 49 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 49", "contest_title_slug": "biweekly-contest-49", "contest_id": 374, "contest_start_time": 1617460200, "contest_duration": 5400, "user_num": 3193, "question_slugs": ["determine-color-of-a-chessboard-square", "sentence-similarity-iii", "count-nice-pairs-in-an-array", "maximum-number-of-groups-getting-fresh-donuts"]}, {"contest_title": "\u7b2c 50 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 50", "contest_title_slug": "biweekly-contest-50", "contest_id": 390, "contest_start_time": 1618669800, "contest_duration": 5400, "user_num": 3608, "question_slugs": ["minimum-operations-to-make-the-array-increasing", "queries-on-number-of-points-inside-a-circle", "maximum-xor-for-each-query", "minimum-number-of-operations-to-make-string-sorted"]}, {"contest_title": "\u7b2c 51 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 51", "contest_title_slug": "biweekly-contest-51", "contest_id": 396, "contest_start_time": 1619879400, "contest_duration": 5400, "user_num": 2675, "question_slugs": ["replace-all-digits-with-characters", "seat-reservation-manager", "maximum-element-after-decreasing-and-rearranging", "closest-room"]}, {"contest_title": "\u7b2c 52 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 52", "contest_title_slug": "biweekly-contest-52", "contest_id": 402, "contest_start_time": 1621089000, "contest_duration": 5400, "user_num": 2930, "question_slugs": ["sorting-the-sentence", "incremental-memory-leak", "rotating-the-box", "sum-of-floored-pairs"]}, {"contest_title": "\u7b2c 53 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 53", "contest_title_slug": "biweekly-contest-53", "contest_id": 408, "contest_start_time": 1622298600, "contest_duration": 5400, "user_num": 3069, "question_slugs": ["substrings-of-size-three-with-distinct-characters", "minimize-maximum-pair-sum-in-array", "get-biggest-three-rhombus-sums-in-a-grid", "minimum-xor-sum-of-two-arrays"]}, {"contest_title": "\u7b2c 54 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 54", "contest_title_slug": "biweekly-contest-54", "contest_id": 414, "contest_start_time": 1623508200, "contest_duration": 5400, "user_num": 2479, "question_slugs": ["check-if-all-the-integers-in-a-range-are-covered", "find-the-student-that-will-replace-the-chalk", "largest-magic-square", "minimum-cost-to-change-the-final-value-of-expression"]}, {"contest_title": "\u7b2c 55 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 55", "contest_title_slug": "biweekly-contest-55", "contest_id": 421, "contest_start_time": 1624717800, "contest_duration": 5400, "user_num": 3277, "question_slugs": ["remove-one-element-to-make-the-array-strictly-increasing", "remove-all-occurrences-of-a-substring", "maximum-alternating-subsequence-sum", "design-movie-rental-system"]}, {"contest_title": "\u7b2c 56 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 56", "contest_title_slug": "biweekly-contest-56", "contest_id": 429, "contest_start_time": 1625927400, "contest_duration": 5400, "user_num": 2760, "question_slugs": ["count-square-sum-triples", "nearest-exit-from-entrance-in-maze", "sum-game", "minimum-cost-to-reach-destination-in-time"]}, {"contest_title": "\u7b2c 57 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 57", "contest_title_slug": "biweekly-contest-57", "contest_id": 435, "contest_start_time": 1627137000, "contest_duration": 5400, "user_num": 2933, "question_slugs": ["check-if-all-characters-have-equal-number-of-occurrences", "the-number-of-the-smallest-unoccupied-chair", "describe-the-painting", "number-of-visible-people-in-a-queue"]}, {"contest_title": "\u7b2c 58 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 58", "contest_title_slug": "biweekly-contest-58", "contest_id": 441, "contest_start_time": 1628346600, "contest_duration": 5400, "user_num": 2889, "question_slugs": ["delete-characters-to-make-fancy-string", "check-if-move-is-legal", "minimum-total-space-wasted-with-k-resizing-operations", "maximum-product-of-the-length-of-two-palindromic-substrings"]}, {"contest_title": "\u7b2c 59 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 59", "contest_title_slug": "biweekly-contest-59", "contest_id": 448, "contest_start_time": 1629556200, "contest_duration": 5400, "user_num": 3030, "question_slugs": ["minimum-time-to-type-word-using-special-typewriter", "maximum-matrix-sum", "number-of-ways-to-arrive-at-destination", "number-of-ways-to-separate-numbers"]}, {"contest_title": "\u7b2c 60 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 60", "contest_title_slug": "biweekly-contest-60", "contest_id": 461, "contest_start_time": 1630765800, "contest_duration": 5400, "user_num": 2848, "question_slugs": ["find-the-middle-index-in-array", "find-all-groups-of-farmland", "operations-on-tree", "the-number-of-good-subsets"]}, {"contest_title": "\u7b2c 61 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 61", "contest_title_slug": "biweekly-contest-61", "contest_id": 467, "contest_start_time": 1631975400, "contest_duration": 5400, "user_num": 2534, "question_slugs": ["count-number-of-pairs-with-absolute-difference-k", "find-original-array-from-doubled-array", "maximum-earnings-from-taxi", "minimum-number-of-operations-to-make-array-continuous"]}, {"contest_title": "\u7b2c 62 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 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1635604200, "contest_duration": 5400, "user_num": 2838, "question_slugs": ["kth-distinct-string-in-an-array", "two-best-non-overlapping-events", "plates-between-candles", "number-of-valid-move-combinations-on-chessboard"]}, {"contest_title": "\u7b2c 65 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 65", "contest_title_slug": "biweekly-contest-65", "contest_id": 497, "contest_start_time": 1636813800, "contest_duration": 5400, "user_num": 2676, "question_slugs": ["check-whether-two-strings-are-almost-equivalent", "walking-robot-simulation-ii", "most-beautiful-item-for-each-query", "maximum-number-of-tasks-you-can-assign"]}, {"contest_title": "\u7b2c 66 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 66", "contest_title_slug": "biweekly-contest-66", "contest_id": 503, "contest_start_time": 1638023400, "contest_duration": 5400, "user_num": 2803, "question_slugs": ["count-common-words-with-one-occurrence", "minimum-number-of-food-buckets-to-feed-the-hamsters", "minimum-cost-homecoming-of-a-robot-in-a-grid", "count-fertile-pyramids-in-a-land"]}, {"contest_title": "\u7b2c 67 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 67", "contest_title_slug": "biweekly-contest-67", "contest_id": 509, "contest_start_time": 1639233000, "contest_duration": 5400, "user_num": 2923, "question_slugs": ["find-subsequence-of-length-k-with-the-largest-sum", "find-good-days-to-rob-the-bank", "detonate-the-maximum-bombs", "sequentially-ordinal-rank-tracker"]}, {"contest_title": "\u7b2c 68 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 68", "contest_title_slug": "biweekly-contest-68", "contest_id": 515, "contest_start_time": 1640442600, "contest_duration": 5400, "user_num": 2854, "question_slugs": ["maximum-number-of-words-found-in-sentences", "find-all-possible-recipes-from-given-supplies", "check-if-a-parentheses-string-can-be-valid", "abbreviating-the-product-of-a-range"]}, {"contest_title": "\u7b2c 69 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 69", "contest_title_slug": "biweekly-contest-69", "contest_id": 521, "contest_start_time": 1641652200, "contest_duration": 5400, "user_num": 3360, "question_slugs": ["capitalize-the-title", "maximum-twin-sum-of-a-linked-list", "longest-palindrome-by-concatenating-two-letter-words", "stamping-the-grid"]}, {"contest_title": "\u7b2c 70 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 70", "contest_title_slug": "biweekly-contest-70", "contest_id": 527, "contest_start_time": 1642861800, "contest_duration": 5400, "user_num": 3640, "question_slugs": ["minimum-cost-of-buying-candies-with-discount", "count-the-hidden-sequences", "k-highest-ranked-items-within-a-price-range", "number-of-ways-to-divide-a-long-corridor"]}, {"contest_title": "\u7b2c 71 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 71", "contest_title_slug": "biweekly-contest-71", "contest_id": 533, "contest_start_time": 1644071400, "contest_duration": 5400, "user_num": 3028, "question_slugs": ["minimum-sum-of-four-digit-number-after-splitting-digits", "partition-array-according-to-given-pivot", "minimum-cost-to-set-cooking-time", "minimum-difference-in-sums-after-removal-of-elements"]}, {"contest_title": "\u7b2c 72 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 72", "contest_title_slug": "biweekly-contest-72", "contest_id": 539, "contest_start_time": 1645281000, "contest_duration": 5400, "user_num": 4400, "question_slugs": ["count-equal-and-divisible-pairs-in-an-array", "find-three-consecutive-integers-that-sum-to-a-given-number", "maximum-split-of-positive-even-integers", "count-good-triplets-in-an-array"]}, {"contest_title": "\u7b2c 73 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 73", "contest_title_slug": "biweekly-contest-73", "contest_id": 545, "contest_start_time": 1646490600, "contest_duration": 5400, "user_num": 5132, "question_slugs": ["most-frequent-number-following-key-in-an-array", "sort-the-jumbled-numbers", "all-ancestors-of-a-node-in-a-directed-acyclic-graph", "minimum-number-of-moves-to-make-palindrome"]}, {"contest_title": "\u7b2c 74 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 74", "contest_title_slug": "biweekly-contest-74", "contest_id": 554, "contest_start_time": 1647700200, "contest_duration": 5400, "user_num": 5442, "question_slugs": ["divide-array-into-equal-pairs", "maximize-number-of-subsequences-in-a-string", "minimum-operations-to-halve-array-sum", "minimum-white-tiles-after-covering-with-carpets"]}, {"contest_title": "\u7b2c 75 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 75", "contest_title_slug": "biweekly-contest-75", "contest_id": 563, "contest_start_time": 1648909800, "contest_duration": 5400, "user_num": 4335, "question_slugs": ["minimum-bit-flips-to-convert-number", "find-triangular-sum-of-an-array", "number-of-ways-to-select-buildings", "sum-of-scores-of-built-strings"]}, {"contest_title": "\u7b2c 76 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 76", "contest_title_slug": "biweekly-contest-76", "contest_id": 572, "contest_start_time": 1650119400, "contest_duration": 5400, "user_num": 4477, "question_slugs": ["find-closest-number-to-zero", "number-of-ways-to-buy-pens-and-pencils", "design-an-atm-machine", "maximum-score-of-a-node-sequence"]}, {"contest_title": "\u7b2c 77 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 77", "contest_title_slug": "biweekly-contest-77", "contest_id": 581, "contest_start_time": 1651329000, "contest_duration": 5400, "user_num": 4211, "question_slugs": ["count-prefixes-of-a-given-string", "minimum-average-difference", "count-unguarded-cells-in-the-grid", "escape-the-spreading-fire"]}, {"contest_title": "\u7b2c 78 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 78", "contest_title_slug": "biweekly-contest-78", "contest_id": 590, "contest_start_time": 1652538600, "contest_duration": 5400, "user_num": 4347, "question_slugs": ["find-the-k-beauty-of-a-number", "number-of-ways-to-split-array", "maximum-white-tiles-covered-by-a-carpet", "substring-with-largest-variance"]}, {"contest_title": "\u7b2c 79 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 79", "contest_title_slug": "biweekly-contest-79", "contest_id": 598, "contest_start_time": 1653748200, "contest_duration": 5400, "user_num": 4250, "question_slugs": ["check-if-number-has-equal-digit-count-and-digit-value", "sender-with-largest-word-count", "maximum-total-importance-of-roads", "booking-concert-tickets-in-groups"]}, {"contest_title": "\u7b2c 80 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 80", "contest_title_slug": "biweekly-contest-80", "contest_id": 608, "contest_start_time": 1654957800, "contest_duration": 5400, "user_num": 3949, "question_slugs": ["strong-password-checker-ii", "successful-pairs-of-spells-and-potions", "match-substring-after-replacement", "count-subarrays-with-score-less-than-k"]}, {"contest_title": "\u7b2c 81 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 81", "contest_title_slug": "biweekly-contest-81", "contest_id": 614, "contest_start_time": 1656167400, "contest_duration": 5400, "user_num": 3847, "question_slugs": ["count-asterisks", "count-unreachable-pairs-of-nodes-in-an-undirected-graph", "maximum-xor-after-operations", "number-of-distinct-roll-sequences"]}, {"contest_title": "\u7b2c 82 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 82", "contest_title_slug": "biweekly-contest-82", "contest_id": 646, "contest_start_time": 1657377000, "contest_duration": 5400, "user_num": 4144, "question_slugs": ["evaluate-boolean-binary-tree", "the-latest-time-to-catch-a-bus", "minimum-sum-of-squared-difference", "subarray-with-elements-greater-than-varying-threshold"]}, {"contest_title": "\u7b2c 83 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 83", "contest_title_slug": "biweekly-contest-83", "contest_id": 652, "contest_start_time": 1658586600, "contest_duration": 5400, "user_num": 4437, "question_slugs": ["best-poker-hand", "number-of-zero-filled-subarrays", "design-a-number-container-system", "shortest-impossible-sequence-of-rolls"]}, {"contest_title": "\u7b2c 84 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 84", "contest_title_slug": "biweekly-contest-84", "contest_id": 658, "contest_start_time": 1659796200, "contest_duration": 5400, "user_num": 4574, "question_slugs": ["merge-similar-items", "count-number-of-bad-pairs", "task-scheduler-ii", "minimum-replacements-to-sort-the-array"]}, {"contest_title": "\u7b2c 85 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 85", "contest_title_slug": "biweekly-contest-85", "contest_id": 668, "contest_start_time": 1661005800, "contest_duration": 5400, "user_num": 4193, "question_slugs": ["minimum-recolors-to-get-k-consecutive-black-blocks", "time-needed-to-rearrange-a-binary-string", "shifting-letters-ii", "maximum-segment-sum-after-removals"]}, {"contest_title": "\u7b2c 86 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 86", "contest_title_slug": "biweekly-contest-86", "contest_id": 688, "contest_start_time": 1662215400, "contest_duration": 5400, "user_num": 4401, "question_slugs": ["find-subarrays-with-equal-sum", "strictly-palindromic-number", "maximum-rows-covered-by-columns", "maximum-number-of-robots-within-budget"]}, {"contest_title": "\u7b2c 87 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 87", "contest_title_slug": "biweekly-contest-87", "contest_id": 703, "contest_start_time": 1663425000, "contest_duration": 5400, "user_num": 4005, "question_slugs": ["count-days-spent-together", "maximum-matching-of-players-with-trainers", "smallest-subarrays-with-maximum-bitwise-or", "minimum-money-required-before-transactions"]}, {"contest_title": "\u7b2c 88 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 88", "contest_title_slug": "biweekly-contest-88", "contest_id": 745, "contest_start_time": 1664634600, "contest_duration": 5400, "user_num": 3905, "question_slugs": ["remove-letter-to-equalize-frequency", "longest-uploaded-prefix", "bitwise-xor-of-all-pairings", "number-of-pairs-satisfying-inequality"]}, {"contest_title": "\u7b2c 89 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 89", "contest_title_slug": "biweekly-contest-89", "contest_id": 755, "contest_start_time": 1665844200, "contest_duration": 5400, "user_num": 3984, "question_slugs": ["number-of-valid-clock-times", "range-product-queries-of-powers", "minimize-maximum-of-array", "create-components-with-same-value"]}, {"contest_title": "\u7b2c 90 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 90", "contest_title_slug": "biweekly-contest-90", "contest_id": 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"contest_start_time": 1673101800, "contest_duration": 5400, "user_num": 2880, "question_slugs": ["categorize-box-according-to-criteria", "find-consecutive-integers-from-a-data-stream", "find-xor-beauty-of-array", "maximize-the-minimum-powered-city"]}, {"contest_title": "\u7b2c 96 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 96", "contest_title_slug": "biweekly-contest-96", "contest_id": 804, "contest_start_time": 1674311400, "contest_duration": 5400, "user_num": 2103, "question_slugs": ["minimum-common-value", "minimum-operations-to-make-array-equal-ii", "maximum-subsequence-score", "check-if-point-is-reachable"]}, {"contest_title": "\u7b2c 97 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 97", "contest_title_slug": "biweekly-contest-97", "contest_id": 810, "contest_start_time": 1675521000, "contest_duration": 5400, "user_num": 2631, "question_slugs": ["separate-the-digits-in-an-array", "maximum-number-of-integers-to-choose-from-a-range-i", "maximize-win-from-two-segments", "disconnect-path-in-a-binary-matrix-by-at-most-one-flip"]}, {"contest_title": "\u7b2c 98 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 98", "contest_title_slug": "biweekly-contest-98", "contest_id": 816, "contest_start_time": 1676730600, "contest_duration": 5400, "user_num": 3250, "question_slugs": ["maximum-difference-by-remapping-a-digit", "minimum-score-by-changing-two-elements", "minimum-impossible-or", "handling-sum-queries-after-update"]}, {"contest_title": "\u7b2c 99 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 99", "contest_title_slug": "biweekly-contest-99", "contest_id": 822, "contest_start_time": 1677940200, "contest_duration": 5400, "user_num": 3467, "question_slugs": ["split-with-minimum-sum", "count-total-number-of-colored-cells", "count-ways-to-group-overlapping-ranges", "count-number-of-possible-root-nodes"]}, {"contest_title": "\u7b2c 100 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 100", "contest_title_slug": "biweekly-contest-100", "contest_id": 832, "contest_start_time": 1679149800, "contest_duration": 5400, "user_num": 3639, "question_slugs": ["distribute-money-to-maximum-children", "maximize-greatness-of-an-array", "find-score-of-an-array-after-marking-all-elements", "minimum-time-to-repair-cars"]}, {"contest_title": "\u7b2c 101 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 101", "contest_title_slug": "biweekly-contest-101", "contest_id": 842, "contest_start_time": 1680359400, "contest_duration": 5400, "user_num": 3353, "question_slugs": ["form-smallest-number-from-two-digit-arrays", "find-the-substring-with-maximum-cost", "make-k-subarray-sums-equal", "shortest-cycle-in-a-graph"]}, {"contest_title": "\u7b2c 102 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 102", "contest_title_slug": "biweekly-contest-102", "contest_id": 853, "contest_start_time": 1681569000, "contest_duration": 5400, "user_num": 3058, "question_slugs": ["find-the-width-of-columns-of-a-grid", "find-the-score-of-all-prefixes-of-an-array", "cousins-in-binary-tree-ii", "design-graph-with-shortest-path-calculator"]}, {"contest_title": "\u7b2c 103 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 103", "contest_title_slug": "biweekly-contest-103", "contest_id": 859, "contest_start_time": 1682778600, "contest_duration": 5400, "user_num": 2299, "question_slugs": ["maximum-sum-with-exactly-k-elements", "find-the-prefix-common-array-of-two-arrays", "maximum-number-of-fish-in-a-grid", "make-array-empty"]}, {"contest_title": "\u7b2c 104 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 104", "contest_title_slug": "biweekly-contest-104", "contest_id": 866, "contest_start_time": 1683988200, "contest_duration": 5400, "user_num": 2519, "question_slugs": ["number-of-senior-citizens", "sum-in-a-matrix", "maximum-or", "power-of-heroes"]}, {"contest_title": "\u7b2c 105 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 105", "contest_title_slug": "biweekly-contest-105", "contest_id": 873, "contest_start_time": 1685197800, "contest_duration": 5400, "user_num": 2604, "question_slugs": ["buy-two-chocolates", "extra-characters-in-a-string", "maximum-strength-of-a-group", "greatest-common-divisor-traversal"]}, {"contest_title": "\u7b2c 106 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 106", "contest_title_slug": "biweekly-contest-106", "contest_id": 879, "contest_start_time": 1686407400, "contest_duration": 5400, "user_num": 2346, "question_slugs": ["check-if-the-number-is-fascinating", "find-the-longest-semi-repetitive-substring", "movement-of-robots", "find-a-good-subset-of-the-matrix"]}, {"contest_title": "\u7b2c 107 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 107", "contest_title_slug": "biweekly-contest-107", "contest_id": 885, "contest_start_time": 1687617000, "contest_duration": 5400, "user_num": 1870, "question_slugs": 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\u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 110", "contest_title_slug": "biweekly-contest-110", "contest_id": 903, "contest_start_time": 1691245800, "contest_duration": 5400, "user_num": 2546, "question_slugs": ["account-balance-after-rounded-purchase", "insert-greatest-common-divisors-in-linked-list", "minimum-seconds-to-equalize-a-circular-array", "minimum-time-to-make-array-sum-at-most-x"]}, {"contest_title": "\u7b2c 111 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 111", "contest_title_slug": "biweekly-contest-111", "contest_id": 909, "contest_start_time": 1692455400, "contest_duration": 5400, "user_num": 2787, "question_slugs": ["count-pairs-whose-sum-is-less-than-target", "make-string-a-subsequence-using-cyclic-increments", "sorting-three-groups", "number-of-beautiful-integers-in-the-range"]}, {"contest_title": "\u7b2c 112 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 112", "contest_title_slug": "biweekly-contest-112", "contest_id": 917, "contest_start_time": 1693665000, "contest_duration": 5400, "user_num": 2900, "question_slugs": ["check-if-strings-can-be-made-equal-with-operations-i", "check-if-strings-can-be-made-equal-with-operations-ii", "maximum-sum-of-almost-unique-subarray", "count-k-subsequences-of-a-string-with-maximum-beauty"]}, {"contest_title": "\u7b2c 113 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 113", "contest_title_slug": "biweekly-contest-113", "contest_id": 923, "contest_start_time": 1694874600, "contest_duration": 5400, "user_num": 3028, "question_slugs": ["minimum-right-shifts-to-sort-the-array", "minimum-array-length-after-pair-removals", "count-pairs-of-points-with-distance-k", "minimum-edge-reversals-so-every-node-is-reachable"]}, {"contest_title": "\u7b2c 114 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 114", "contest_title_slug": "biweekly-contest-114", "contest_id": 929, "contest_start_time": 1696084200, "contest_duration": 5400, "user_num": 2406, "question_slugs": ["minimum-operations-to-collect-elements", "minimum-number-of-operations-to-make-array-empty", "split-array-into-maximum-number-of-subarrays", "maximum-number-of-k-divisible-components"]}, {"contest_title": "\u7b2c 115 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 115", "contest_title_slug": "biweekly-contest-115", "contest_id": 935, "contest_start_time": 1697293800, "contest_duration": 5400, "user_num": 2809, "question_slugs": ["last-visited-integers", "longest-unequal-adjacent-groups-subsequence-i", "longest-unequal-adjacent-groups-subsequence-ii", "count-of-sub-multisets-with-bounded-sum"]}, {"contest_title": "\u7b2c 116 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 116", "contest_title_slug": "biweekly-contest-116", "contest_id": 941, "contest_start_time": 1698503400, "contest_duration": 5400, "user_num": 2904, "question_slugs": ["subarrays-distinct-element-sum-of-squares-i", 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"find-maximum-non-decreasing-array-length"]}, {"contest_title": "\u7b2c 119 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 119", "contest_title_slug": "biweekly-contest-119", "contest_id": 961, "contest_start_time": 1702132200, "contest_duration": 5400, "user_num": 2472, "question_slugs": ["find-common-elements-between-two-arrays", "remove-adjacent-almost-equal-characters", "length-of-longest-subarray-with-at-most-k-frequency", "number-of-possible-sets-of-closing-branches"]}, {"contest_title": "\u7b2c 120 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 120", "contest_title_slug": "biweekly-contest-120", "contest_id": 967, "contest_start_time": 1703341800, "contest_duration": 5400, "user_num": 2542, "question_slugs": ["count-the-number-of-incremovable-subarrays-i", "find-polygon-with-the-largest-perimeter", "count-the-number-of-incremovable-subarrays-ii", "find-number-of-coins-to-place-in-tree-nodes"]}, {"contest_title": "\u7b2c 121 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"contest_duration": 5400, "user_num": 2599, "question_slugs": ["minimum-operations-to-exceed-threshold-value-i", "minimum-operations-to-exceed-threshold-value-ii", "count-pairs-of-connectable-servers-in-a-weighted-tree-network", "find-the-maximum-sum-of-node-values"]}, {"contest_title": "\u7b2c 126 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 126", "contest_title_slug": "biweekly-contest-126", "contest_id": 1003, "contest_start_time": 1710599400, "contest_duration": 5400, "user_num": 3234, "question_slugs": ["find-the-sum-of-encrypted-integers", "mark-elements-on-array-by-performing-queries", "replace-question-marks-in-string-to-minimize-its-value", "find-the-sum-of-the-power-of-all-subsequences"]}, {"contest_title": "\u7b2c 127 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 127", "contest_title_slug": "biweekly-contest-127", "contest_id": 1010, "contest_start_time": 1711809000, "contest_duration": 5400, "user_num": 2950, "question_slugs": 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\ No newline at end of file
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790, "question_slugs": ["robot-bounded-in-circle", "flower-planting-with-no-adjacent", "partition-array-for-maximum-sum", "longest-duplicate-substring"]}, {"contest_title": "\u7b2c 137 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 137", "contest_title_slug": "weekly-contest-137", "contest_id": 67, "contest_start_time": 1558233000, "contest_duration": 5400, "user_num": 766, "question_slugs": ["last-stone-weight", "remove-all-adjacent-duplicates-in-string", "longest-string-chain", "last-stone-weight-ii"]}, {"contest_title": "\u7b2c 138 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 138", "contest_title_slug": "weekly-contest-138", "contest_id": 68, "contest_start_time": 1558837800, "contest_duration": 5400, "user_num": 752, "question_slugs": ["height-checker", "grumpy-bookstore-owner", "previous-permutation-with-one-swap", "distant-barcodes"]}, {"contest_title": "\u7b2c 139 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 139", "contest_title_slug": 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"contest_start_time": 1562466600, "contest_duration": 5400, "user_num": 777, "question_slugs": ["defanging-an-ip-address", "corporate-flight-bookings", "delete-nodes-and-return-forest", "maximum-nesting-depth-of-two-valid-parentheses-strings"]}, {"contest_title": "\u7b2c 145 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 145", "contest_title_slug": "weekly-contest-145", "contest_id": 87, "contest_start_time": 1563071400, "contest_duration": 5400, "user_num": 1114, "question_slugs": ["relative-sort-array", "lowest-common-ancestor-of-deepest-leaves", "longest-well-performing-interval", "smallest-sufficient-team"]}, {"contest_title": "\u7b2c 146 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 146", "contest_title_slug": "weekly-contest-146", "contest_id": 89, "contest_start_time": 1563676200, "contest_duration": 5400, "user_num": 1189, "question_slugs": ["number-of-equivalent-domino-pairs", "shortest-path-with-alternating-colors", "minimum-cost-tree-from-leaf-values", "maximum-of-absolute-value-expression"]}, {"contest_title": "\u7b2c 147 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 147", "contest_title_slug": "weekly-contest-147", "contest_id": 90, "contest_start_time": 1564281000, "contest_duration": 5400, "user_num": 1132, "question_slugs": ["n-th-tribonacci-number", "alphabet-board-path", "largest-1-bordered-square", "stone-game-ii"]}, {"contest_title": "\u7b2c 148 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 148", "contest_title_slug": "weekly-contest-148", "contest_id": 93, "contest_start_time": 1564885800, "contest_duration": 5400, "user_num": 1251, "question_slugs": ["decrease-elements-to-make-array-zigzag", "binary-tree-coloring-game", "snapshot-array", "longest-chunked-palindrome-decomposition"]}, {"contest_title": "\u7b2c 149 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 149", "contest_title_slug": "weekly-contest-149", "contest_id": 94, "contest_start_time": 1565490600, "contest_duration": 5400, "user_num": 1351, "question_slugs": ["day-of-the-year", "number-of-dice-rolls-with-target-sum", "swap-for-longest-repeated-character-substring", "online-majority-element-in-subarray"]}, {"contest_title": "\u7b2c 150 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 150", "contest_title_slug": "weekly-contest-150", "contest_id": 96, "contest_start_time": 1566095400, "contest_duration": 5400, "user_num": 1473, "question_slugs": ["find-words-that-can-be-formed-by-characters", "maximum-level-sum-of-a-binary-tree", "as-far-from-land-as-possible", "last-substring-in-lexicographical-order"]}, {"contest_title": "\u7b2c 151 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 151", "contest_title_slug": "weekly-contest-151", "contest_id": 98, "contest_start_time": 1566700200, "contest_duration": 5400, "user_num": 1341, "question_slugs": ["invalid-transactions", "compare-strings-by-frequency-of-the-smallest-character", "remove-zero-sum-consecutive-nodes-from-linked-list", "dinner-plate-stacks"]}, {"contest_title": "\u7b2c 152 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 152", "contest_title_slug": "weekly-contest-152", "contest_id": 100, "contest_start_time": 1567305000, "contest_duration": 5400, "user_num": 1367, "question_slugs": ["prime-arrangements", "diet-plan-performance", "can-make-palindrome-from-substring", "number-of-valid-words-for-each-puzzle"]}, {"contest_title": "\u7b2c 153 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 153", "contest_title_slug": "weekly-contest-153", "contest_id": 102, "contest_start_time": 1567909800, "contest_duration": 5400, "user_num": 1434, "question_slugs": ["distance-between-bus-stops", "day-of-the-week", "maximum-subarray-sum-with-one-deletion", "make-array-strictly-increasing"]}, {"contest_title": "\u7b2c 154 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 154", "contest_title_slug": "weekly-contest-154", "contest_id": 106, "contest_start_time": 1568514600, "contest_duration": 5400, "user_num": 1299, "question_slugs": ["maximum-number-of-balloons", "reverse-substrings-between-each-pair-of-parentheses", "k-concatenation-maximum-sum", "critical-connections-in-a-network"]}, {"contest_title": "\u7b2c 155 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 155", "contest_title_slug": "weekly-contest-155", "contest_id": 107, "contest_start_time": 1569119400, "contest_duration": 5400, "user_num": 1603, "question_slugs": ["minimum-absolute-difference", "ugly-number-iii", "smallest-string-with-swaps", "sort-items-by-groups-respecting-dependencies"]}, {"contest_title": "\u7b2c 156 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 156", "contest_title_slug": "weekly-contest-156", "contest_id": 113, "contest_start_time": 1569724200, "contest_duration": 5400, "user_num": 1433, "question_slugs": ["unique-number-of-occurrences", "get-equal-substrings-within-budget", "remove-all-adjacent-duplicates-in-string-ii", "minimum-moves-to-reach-target-with-rotations"]}, {"contest_title": "\u7b2c 157 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 157", "contest_title_slug": "weekly-contest-157", "contest_id": 114, "contest_start_time": 1570329000, "contest_duration": 5400, "user_num": 1217, "question_slugs": ["minimum-cost-to-move-chips-to-the-same-position", "longest-arithmetic-subsequence-of-given-difference", "path-with-maximum-gold", "count-vowels-permutation"]}, {"contest_title": "\u7b2c 158 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 158", "contest_title_slug": "weekly-contest-158", "contest_id": 116, "contest_start_time": 1570933800, "contest_duration": 5400, "user_num": 1716, "question_slugs": ["split-a-string-in-balanced-strings", "queens-that-can-attack-the-king", "dice-roll-simulation", "maximum-equal-frequency"]}, {"contest_title": "\u7b2c 159 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 159", "contest_title_slug": "weekly-contest-159", "contest_id": 117, "contest_start_time": 1571538600, "contest_duration": 5400, "user_num": 1634, "question_slugs": ["check-if-it-is-a-straight-line", "remove-sub-folders-from-the-filesystem", "replace-the-substring-for-balanced-string", "maximum-profit-in-job-scheduling"]}, {"contest_title": "\u7b2c 160 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 160", "contest_title_slug": "weekly-contest-160", "contest_id": 119, "contest_start_time": 1572143400, "contest_duration": 5400, "user_num": 1692, "question_slugs": ["find-positive-integer-solution-for-a-given-equation", "circular-permutation-in-binary-representation", "maximum-length-of-a-concatenated-string-with-unique-characters", "tiling-a-rectangle-with-the-fewest-squares"]}, {"contest_title": "\u7b2c 161 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 161", "contest_title_slug": "weekly-contest-161", "contest_id": 120, "contest_start_time": 1572748200, "contest_duration": 5400, "user_num": 1610, "question_slugs": ["minimum-swaps-to-make-strings-equal", "count-number-of-nice-subarrays", "minimum-remove-to-make-valid-parentheses", "check-if-it-is-a-good-array"]}, {"contest_title": "\u7b2c 162 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 162", "contest_title_slug": "weekly-contest-162", "contest_id": 122, "contest_start_time": 1573353000, "contest_duration": 5400, "user_num": 1569, "question_slugs": ["cells-with-odd-values-in-a-matrix", "reconstruct-a-2-row-binary-matrix", "number-of-closed-islands", "maximum-score-words-formed-by-letters"]}, {"contest_title": "\u7b2c 163 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 163", "contest_title_slug": "weekly-contest-163", "contest_id": 123, "contest_start_time": 1573957800, "contest_duration": 5400, "user_num": 1605, "question_slugs": ["shift-2d-grid", "find-elements-in-a-contaminated-binary-tree", "greatest-sum-divisible-by-three", "minimum-moves-to-move-a-box-to-their-target-location"]}, {"contest_title": "\u7b2c 164 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 164", "contest_title_slug": "weekly-contest-164", "contest_id": 125, "contest_start_time": 1574562600, "contest_duration": 5400, "user_num": 1676, "question_slugs": ["minimum-time-visiting-all-points", "count-servers-that-communicate", "search-suggestions-system", "number-of-ways-to-stay-in-the-same-place-after-some-steps"]}, {"contest_title": "\u7b2c 165 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 165", "contest_title_slug": "weekly-contest-165", "contest_id": 128, "contest_start_time": 1575167400, "contest_duration": 5400, "user_num": 1660, "question_slugs": ["find-winner-on-a-tic-tac-toe-game", "number-of-burgers-with-no-waste-of-ingredients", "count-square-submatrices-with-all-ones", "palindrome-partitioning-iii"]}, {"contest_title": "\u7b2c 166 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 166", "contest_title_slug": "weekly-contest-166", "contest_id": 130, "contest_start_time": 1575772200, "contest_duration": 5400, "user_num": 1676, "question_slugs": ["subtract-the-product-and-sum-of-digits-of-an-integer", "group-the-people-given-the-group-size-they-belong-to", "find-the-smallest-divisor-given-a-threshold", "minimum-number-of-flips-to-convert-binary-matrix-to-zero-matrix"]}, {"contest_title": "\u7b2c 167 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 167", "contest_title_slug": "weekly-contest-167", "contest_id": 131, "contest_start_time": 1576377000, "contest_duration": 5400, "user_num": 1537, "question_slugs": ["convert-binary-number-in-a-linked-list-to-integer", "sequential-digits", "maximum-side-length-of-a-square-with-sum-less-than-or-equal-to-threshold", "shortest-path-in-a-grid-with-obstacles-elimination"]}, {"contest_title": "\u7b2c 168 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 168", "contest_title_slug": "weekly-contest-168", "contest_id": 133, "contest_start_time": 1576981800, "contest_duration": 5400, "user_num": 1553, "question_slugs": ["find-numbers-with-even-number-of-digits", "divide-array-in-sets-of-k-consecutive-numbers", "maximum-number-of-occurrences-of-a-substring", "maximum-candies-you-can-get-from-boxes"]}, {"contest_title": "\u7b2c 169 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 169", "contest_title_slug": "weekly-contest-169", "contest_id": 134, "contest_start_time": 1577586600, "contest_duration": 5400, "user_num": 1568, "question_slugs": ["find-n-unique-integers-sum-up-to-zero", "all-elements-in-two-binary-search-trees", "jump-game-iii", "verbal-arithmetic-puzzle"]}, {"contest_title": "\u7b2c 170 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 170", "contest_title_slug": "weekly-contest-170", "contest_id": 136, "contest_start_time": 1578191400, "contest_duration": 5400, "user_num": 1649, "question_slugs": ["decrypt-string-from-alphabet-to-integer-mapping", "xor-queries-of-a-subarray", "get-watched-videos-by-your-friends", "minimum-insertion-steps-to-make-a-string-palindrome"]}, {"contest_title": "\u7b2c 171 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 171", "contest_title_slug": "weekly-contest-171", "contest_id": 137, "contest_start_time": 1578796200, "contest_duration": 5400, "user_num": 1708, "question_slugs": ["convert-integer-to-the-sum-of-two-no-zero-integers", "minimum-flips-to-make-a-or-b-equal-to-c", "number-of-operations-to-make-network-connected", "minimum-distance-to-type-a-word-using-two-fingers"]}, {"contest_title": "\u7b2c 172 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 172", "contest_title_slug": "weekly-contest-172", "contest_id": 139, "contest_start_time": 1579401000, "contest_duration": 5400, "user_num": 1415, "question_slugs": ["maximum-69-number", "print-words-vertically", "delete-leaves-with-a-given-value", "minimum-number-of-taps-to-open-to-water-a-garden"]}, {"contest_title": "\u7b2c 173 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 173", "contest_title_slug": "weekly-contest-173", "contest_id": 142, "contest_start_time": 1580005800, "contest_duration": 5400, "user_num": 1072, "question_slugs": ["remove-palindromic-subsequences", "filter-restaurants-by-vegan-friendly-price-and-distance", "find-the-city-with-the-smallest-number-of-neighbors-at-a-threshold-distance", "minimum-difficulty-of-a-job-schedule"]}, {"contest_title": "\u7b2c 174 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 174", "contest_title_slug": "weekly-contest-174", "contest_id": 144, "contest_start_time": 1580610600, "contest_duration": 5400, "user_num": 1660, "question_slugs": ["the-k-weakest-rows-in-a-matrix", "reduce-array-size-to-the-half", "maximum-product-of-splitted-binary-tree", "jump-game-v"]}, {"contest_title": "\u7b2c 175 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 175", "contest_title_slug": "weekly-contest-175", "contest_id": 145, "contest_start_time": 1581215400, "contest_duration": 5400, "user_num": 2048, "question_slugs": ["check-if-n-and-its-double-exist", "minimum-number-of-steps-to-make-two-strings-anagram", "tweet-counts-per-frequency", "maximum-students-taking-exam"]}, {"contest_title": "\u7b2c 176 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 176", "contest_title_slug": "weekly-contest-176", "contest_id": 147, "contest_start_time": 1581820200, "contest_duration": 5400, "user_num": 2410, "question_slugs": ["count-negative-numbers-in-a-sorted-matrix", "product-of-the-last-k-numbers", "maximum-number-of-events-that-can-be-attended", "construct-target-array-with-multiple-sums"]}, {"contest_title": "\u7b2c 177 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 177", "contest_title_slug": "weekly-contest-177", "contest_id": 148, "contest_start_time": 1582425000, "contest_duration": 5400, "user_num": 2986, "question_slugs": ["number-of-days-between-two-dates", "validate-binary-tree-nodes", "closest-divisors", "largest-multiple-of-three"]}, {"contest_title": "\u7b2c 178 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 178", "contest_title_slug": "weekly-contest-178", "contest_id": 154, "contest_start_time": 1583029800, "contest_duration": 5400, "user_num": 3305, "question_slugs": ["how-many-numbers-are-smaller-than-the-current-number", "rank-teams-by-votes", "linked-list-in-binary-tree", "minimum-cost-to-make-at-least-one-valid-path-in-a-grid"]}, {"contest_title": "\u7b2c 179 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 179", "contest_title_slug": "weekly-contest-179", "contest_id": 156, "contest_start_time": 1583634600, "contest_duration": 5400, "user_num": 3606, "question_slugs": ["generate-a-string-with-characters-that-have-odd-counts", "number-of-times-binary-string-is-prefix-aligned", "time-needed-to-inform-all-employees", "frog-position-after-t-seconds"]}, {"contest_title": "\u7b2c 180 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 180", "contest_title_slug": "weekly-contest-180", "contest_id": 160, "contest_start_time": 1584239400, "contest_duration": 5400, "user_num": 3715, "question_slugs": ["lucky-numbers-in-a-matrix", "design-a-stack-with-increment-operation", "balance-a-binary-search-tree", "maximum-performance-of-a-team"]}, {"contest_title": "\u7b2c 181 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 181", "contest_title_slug": "weekly-contest-181", "contest_id": 162, "contest_start_time": 1584844200, "contest_duration": 5400, "user_num": 4149, "question_slugs": ["create-target-array-in-the-given-order", "four-divisors", "check-if-there-is-a-valid-path-in-a-grid", "longest-happy-prefix"]}, {"contest_title": "\u7b2c 182 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 182", "contest_title_slug": "weekly-contest-182", "contest_id": 166, "contest_start_time": 1585449000, "contest_duration": 5400, "user_num": 3911, "question_slugs": ["find-lucky-integer-in-an-array", "count-number-of-teams", "design-underground-system", "find-all-good-strings"]}, {"contest_title": "\u7b2c 183 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 183", "contest_title_slug": "weekly-contest-183", "contest_id": 168, "contest_start_time": 1586053800, "contest_duration": 5400, "user_num": 3756, "question_slugs": ["minimum-subsequence-in-non-increasing-order", "number-of-steps-to-reduce-a-number-in-binary-representation-to-one", "longest-happy-string", "stone-game-iii"]}, {"contest_title": "\u7b2c 184 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 184", "contest_title_slug": "weekly-contest-184", "contest_id": 175, "contest_start_time": 1586658600, "contest_duration": 5400, "user_num": 3847, "question_slugs": ["string-matching-in-an-array", "queries-on-a-permutation-with-key", "html-entity-parser", "number-of-ways-to-paint-n-3-grid"]}, {"contest_title": "\u7b2c 185 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 185", "contest_title_slug": "weekly-contest-185", "contest_id": 177, "contest_start_time": 1587263400, "contest_duration": 5400, "user_num": 5004, "question_slugs": ["reformat-the-string", "display-table-of-food-orders-in-a-restaurant", "minimum-number-of-frogs-croaking", "build-array-where-you-can-find-the-maximum-exactly-k-comparisons"]}, {"contest_title": "\u7b2c 186 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 186", "contest_title_slug": "weekly-contest-186", "contest_id": 185, "contest_start_time": 1587868200, "contest_duration": 5400, "user_num": 3108, "question_slugs": ["maximum-score-after-splitting-a-string", "maximum-points-you-can-obtain-from-cards", "diagonal-traverse-ii", "constrained-subsequence-sum"]}, {"contest_title": "\u7b2c 187 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 187", "contest_title_slug": "weekly-contest-187", "contest_id": 191, "contest_start_time": 1588473000, "contest_duration": 5400, "user_num": 3109, "question_slugs": ["destination-city", "check-if-all-1s-are-at-least-length-k-places-away", "longest-continuous-subarray-with-absolute-diff-less-than-or-equal-to-limit", "find-the-kth-smallest-sum-of-a-matrix-with-sorted-rows"]}, {"contest_title": "\u7b2c 188 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 188", "contest_title_slug": "weekly-contest-188", "contest_id": 195, "contest_start_time": 1589077800, "contest_duration": 5400, "user_num": 3982, "question_slugs": ["build-an-array-with-stack-operations", "count-triplets-that-can-form-two-arrays-of-equal-xor", "minimum-time-to-collect-all-apples-in-a-tree", "number-of-ways-of-cutting-a-pizza"]}, {"contest_title": "\u7b2c 189 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 189", "contest_title_slug": "weekly-contest-189", "contest_id": 197, "contest_start_time": 1589682600, "contest_duration": 5400, "user_num": 3692, "question_slugs": ["number-of-students-doing-homework-at-a-given-time", "rearrange-words-in-a-sentence", "people-whose-list-of-favorite-companies-is-not-a-subset-of-another-list", "maximum-number-of-darts-inside-of-a-circular-dartboard"]}, {"contest_title": "\u7b2c 190 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 190", "contest_title_slug": "weekly-contest-190", "contest_id": 201, "contest_start_time": 1590287400, "contest_duration": 5400, "user_num": 3352, "question_slugs": ["check-if-a-word-occurs-as-a-prefix-of-any-word-in-a-sentence", "maximum-number-of-vowels-in-a-substring-of-given-length", "pseudo-palindromic-paths-in-a-binary-tree", "max-dot-product-of-two-subsequences"]}, {"contest_title": "\u7b2c 191 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 191", "contest_title_slug": "weekly-contest-191", "contest_id": 203, "contest_start_time": 1590892200, "contest_duration": 5400, "user_num": 3687, "question_slugs": ["maximum-product-of-two-elements-in-an-array", "maximum-area-of-a-piece-of-cake-after-horizontal-and-vertical-cuts", "reorder-routes-to-make-all-paths-lead-to-the-city-zero", "probability-of-a-two-boxes-having-the-same-number-of-distinct-balls"]}, {"contest_title": "\u7b2c 192 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 192", "contest_title_slug": "weekly-contest-192", "contest_id": 207, "contest_start_time": 1591497000, "contest_duration": 5400, "user_num": 3615, "question_slugs": ["shuffle-the-array", "the-k-strongest-values-in-an-array", "design-browser-history", "paint-house-iii"]}, {"contest_title": "\u7b2c 193 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 193", "contest_title_slug": "weekly-contest-193", "contest_id": 209, "contest_start_time": 1592101800, "contest_duration": 5400, "user_num": 3804, "question_slugs": ["running-sum-of-1d-array", "least-number-of-unique-integers-after-k-removals", "minimum-number-of-days-to-make-m-bouquets", "kth-ancestor-of-a-tree-node"]}, {"contest_title": "\u7b2c 194 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 194", "contest_title_slug": "weekly-contest-194", "contest_id": 213, "contest_start_time": 1592706600, "contest_duration": 5400, "user_num": 4378, "question_slugs": ["xor-operation-in-an-array", "making-file-names-unique", "avoid-flood-in-the-city", "find-critical-and-pseudo-critical-edges-in-minimum-spanning-tree"]}, {"contest_title": "\u7b2c 195 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 195", "contest_title_slug": "weekly-contest-195", "contest_id": 215, "contest_start_time": 1593311400, "contest_duration": 5400, "user_num": 3401, "question_slugs": ["path-crossing", "check-if-array-pairs-are-divisible-by-k", "number-of-subsequences-that-satisfy-the-given-sum-condition", "max-value-of-equation"]}, {"contest_title": "\u7b2c 196 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 196", "contest_title_slug": "weekly-contest-196", "contest_id": 219, "contest_start_time": 1593916200, "contest_duration": 5400, "user_num": 5507, "question_slugs": ["can-make-arithmetic-progression-from-sequence", "last-moment-before-all-ants-fall-out-of-a-plank", "count-submatrices-with-all-ones", "minimum-possible-integer-after-at-most-k-adjacent-swaps-on-digits"]}, {"contest_title": "\u7b2c 197 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 197", "contest_title_slug": "weekly-contest-197", "contest_id": 221, "contest_start_time": 1594521000, "contest_duration": 5400, "user_num": 5275, "question_slugs": ["number-of-good-pairs", "number-of-substrings-with-only-1s", "path-with-maximum-probability", "best-position-for-a-service-centre"]}, {"contest_title": "\u7b2c 198 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 198", "contest_title_slug": "weekly-contest-198", "contest_id": 226, "contest_start_time": 1595125800, "contest_duration": 5400, "user_num": 5780, "question_slugs": ["water-bottles", "number-of-nodes-in-the-sub-tree-with-the-same-label", "maximum-number-of-non-overlapping-substrings", "find-a-value-of-a-mysterious-function-closest-to-target"]}, {"contest_title": "\u7b2c 199 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 199", "contest_title_slug": "weekly-contest-199", "contest_id": 228, "contest_start_time": 1595730600, "contest_duration": 5400, "user_num": 5232, "question_slugs": ["shuffle-string", "minimum-suffix-flips", "number-of-good-leaf-nodes-pairs", "string-compression-ii"]}, {"contest_title": "\u7b2c 200 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 200", "contest_title_slug": "weekly-contest-200", "contest_id": 235, "contest_start_time": 1596335400, "contest_duration": 5400, "user_num": 5476, "question_slugs": ["count-good-triplets", "find-the-winner-of-an-array-game", "minimum-swaps-to-arrange-a-binary-grid", "get-the-maximum-score"]}, {"contest_title": "\u7b2c 201 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 201", "contest_title_slug": "weekly-contest-201", "contest_id": 238, "contest_start_time": 1596940200, "contest_duration": 5400, "user_num": 5615, "question_slugs": ["make-the-string-great", "find-kth-bit-in-nth-binary-string", "maximum-number-of-non-overlapping-subarrays-with-sum-equals-target", "minimum-cost-to-cut-a-stick"]}, {"contest_title": "\u7b2c 202 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 202", "contest_title_slug": "weekly-contest-202", "contest_id": 242, "contest_start_time": 1597545000, "contest_duration": 5400, "user_num": 4990, "question_slugs": ["three-consecutive-odds", "minimum-operations-to-make-array-equal", "magnetic-force-between-two-balls", "minimum-number-of-days-to-eat-n-oranges"]}, {"contest_title": "\u7b2c 203 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 203", "contest_title_slug": "weekly-contest-203", "contest_id": 244, "contest_start_time": 1598149800, "contest_duration": 5400, "user_num": 5285, "question_slugs": ["most-visited-sector-in-a-circular-track", "maximum-number-of-coins-you-can-get", "find-latest-group-of-size-m", "stone-game-v"]}, {"contest_title": "\u7b2c 204 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 204", "contest_title_slug": "weekly-contest-204", "contest_id": 257, "contest_start_time": 1598754600, "contest_duration": 5400, "user_num": 4487, "question_slugs": ["detect-pattern-of-length-m-repeated-k-or-more-times", "maximum-length-of-subarray-with-positive-product", "minimum-number-of-days-to-disconnect-island", "number-of-ways-to-reorder-array-to-get-same-bst"]}, {"contest_title": "\u7b2c 205 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 205", "contest_title_slug": "weekly-contest-205", "contest_id": 260, "contest_start_time": 1599359400, "contest_duration": 5400, "user_num": 4176, "question_slugs": ["replace-all-s-to-avoid-consecutive-repeating-characters", "number-of-ways-where-square-of-number-is-equal-to-product-of-two-numbers", "minimum-time-to-make-rope-colorful", "remove-max-number-of-edges-to-keep-graph-fully-traversable"]}, {"contest_title": "\u7b2c 206 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 206", "contest_title_slug": "weekly-contest-206", "contest_id": 267, "contest_start_time": 1599964200, "contest_duration": 5400, "user_num": 4493, "question_slugs": ["special-positions-in-a-binary-matrix", "count-unhappy-friends", "min-cost-to-connect-all-points", "check-if-string-is-transformable-with-substring-sort-operations"]}, {"contest_title": "\u7b2c 207 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 207", "contest_title_slug": "weekly-contest-207", "contest_id": 278, "contest_start_time": 1600569000, "contest_duration": 5400, "user_num": 4116, "question_slugs": ["rearrange-spaces-between-words", "split-a-string-into-the-max-number-of-unique-substrings", "maximum-non-negative-product-in-a-matrix", "minimum-cost-to-connect-two-groups-of-points"]}, {"contest_title": "\u7b2c 208 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 208", "contest_title_slug": "weekly-contest-208", "contest_id": 289, "contest_start_time": 1601173800, "contest_duration": 5400, "user_num": 3582, "question_slugs": ["crawler-log-folder", "maximum-profit-of-operating-a-centennial-wheel", "throne-inheritance", "maximum-number-of-achievable-transfer-requests"]}, {"contest_title": "\u7b2c 209 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 209", "contest_title_slug": "weekly-contest-209", "contest_id": 291, "contest_start_time": 1601778600, "contest_duration": 5400, "user_num": 4023, "question_slugs": ["special-array-with-x-elements-greater-than-or-equal-x", "even-odd-tree", "maximum-number-of-visible-points", "minimum-one-bit-operations-to-make-integers-zero"]}, {"contest_title": "\u7b2c 210 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 210", "contest_title_slug": "weekly-contest-210", "contest_id": 295, "contest_start_time": 1602383400, "contest_duration": 5400, "user_num": 4007, "question_slugs": ["maximum-nesting-depth-of-the-parentheses", "maximal-network-rank", "split-two-strings-to-make-palindrome", "count-subtrees-with-max-distance-between-cities"]}, {"contest_title": "\u7b2c 211 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 211", "contest_title_slug": "weekly-contest-211", "contest_id": 297, "contest_start_time": 1602988200, "contest_duration": 5400, "user_num": 4034, "question_slugs": ["largest-substring-between-two-equal-characters", "lexicographically-smallest-string-after-applying-operations", "best-team-with-no-conflicts", "graph-connectivity-with-threshold"]}, {"contest_title": "\u7b2c 212 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 212", "contest_title_slug": "weekly-contest-212", "contest_id": 301, "contest_start_time": 1603593000, "contest_duration": 5400, "user_num": 4227, "question_slugs": ["slowest-key", "arithmetic-subarrays", "path-with-minimum-effort", "rank-transform-of-a-matrix"]}, {"contest_title": "\u7b2c 213 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 213", "contest_title_slug": "weekly-contest-213", "contest_id": 303, "contest_start_time": 1604197800, "contest_duration": 5400, "user_num": 3827, "question_slugs": ["check-array-formation-through-concatenation", "count-sorted-vowel-strings", "furthest-building-you-can-reach", "kth-smallest-instructions"]}, {"contest_title": "\u7b2c 214 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 214", "contest_title_slug": "weekly-contest-214", "contest_id": 307, "contest_start_time": 1604802600, "contest_duration": 5400, "user_num": 3598, "question_slugs": ["get-maximum-in-generated-array", "minimum-deletions-to-make-character-frequencies-unique", "sell-diminishing-valued-colored-balls", "create-sorted-array-through-instructions"]}, {"contest_title": "\u7b2c 215 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 215", "contest_title_slug": "weekly-contest-215", "contest_id": 309, "contest_start_time": 1605407400, "contest_duration": 5400, "user_num": 4429, "question_slugs": ["design-an-ordered-stream", "determine-if-two-strings-are-close", "minimum-operations-to-reduce-x-to-zero", "maximize-grid-happiness"]}, {"contest_title": "\u7b2c 216 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 216", "contest_title_slug": "weekly-contest-216", "contest_id": 313, "contest_start_time": 1606012200, "contest_duration": 5400, "user_num": 3857, "question_slugs": ["check-if-two-string-arrays-are-equivalent", "smallest-string-with-a-given-numeric-value", "ways-to-make-a-fair-array", "minimum-initial-energy-to-finish-tasks"]}, {"contest_title": "\u7b2c 217 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 217", "contest_title_slug": "weekly-contest-217", "contest_id": 315, "contest_start_time": 1606617000, "contest_duration": 5400, "user_num": 3745, "question_slugs": ["richest-customer-wealth", "find-the-most-competitive-subsequence", "minimum-moves-to-make-array-complementary", "minimize-deviation-in-array"]}, {"contest_title": "\u7b2c 218 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 218", "contest_title_slug": "weekly-contest-218", "contest_id": 319, "contest_start_time": 1607221800, "contest_duration": 5400, "user_num": 3762, "question_slugs": ["goal-parser-interpretation", "max-number-of-k-sum-pairs", "concatenation-of-consecutive-binary-numbers", "minimum-incompatibility"]}, {"contest_title": "\u7b2c 219 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 219", "contest_title_slug": "weekly-contest-219", "contest_id": 322, "contest_start_time": 1607826600, "contest_duration": 5400, "user_num": 3710, "question_slugs": ["count-of-matches-in-tournament", "partitioning-into-minimum-number-of-deci-binary-numbers", "stone-game-vii", "maximum-height-by-stacking-cuboids"]}, {"contest_title": "\u7b2c 220 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 220", "contest_title_slug": "weekly-contest-220", "contest_id": 326, "contest_start_time": 1608431400, "contest_duration": 5400, "user_num": 3691, "question_slugs": ["reformat-phone-number", "maximum-erasure-value", "jump-game-vi", "checking-existence-of-edge-length-limited-paths"]}, {"contest_title": "\u7b2c 221 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 221", "contest_title_slug": "weekly-contest-221", "contest_id": 328, "contest_start_time": 1609036200, "contest_duration": 5400, "user_num": 3398, "question_slugs": ["determine-if-string-halves-are-alike", "maximum-number-of-eaten-apples", "where-will-the-ball-fall", "maximum-xor-with-an-element-from-array"]}, {"contest_title": "\u7b2c 222 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 222", "contest_title_slug": "weekly-contest-222", "contest_id": 332, "contest_start_time": 1609641000, "contest_duration": 5400, "user_num": 3119, "question_slugs": ["maximum-units-on-a-truck", "count-good-meals", "ways-to-split-array-into-three-subarrays", "minimum-operations-to-make-a-subsequence"]}, {"contest_title": "\u7b2c 223 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 223", "contest_title_slug": "weekly-contest-223", "contest_id": 334, "contest_start_time": 1610245800, "contest_duration": 5400, "user_num": 3872, "question_slugs": ["decode-xored-array", "swapping-nodes-in-a-linked-list", "minimize-hamming-distance-after-swap-operations", "find-minimum-time-to-finish-all-jobs"]}, {"contest_title": "\u7b2c 224 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 224", "contest_title_slug": "weekly-contest-224", "contest_id": 338, "contest_start_time": 1610850600, "contest_duration": 5400, "user_num": 3795, "question_slugs": ["number-of-rectangles-that-can-form-the-largest-square", "tuple-with-same-product", "largest-submatrix-with-rearrangements", "cat-and-mouse-ii"]}, {"contest_title": "\u7b2c 225 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 225", "contest_title_slug": "weekly-contest-225", "contest_id": 340, "contest_start_time": 1611455400, "contest_duration": 5400, "user_num": 3853, "question_slugs": ["latest-time-by-replacing-hidden-digits", "change-minimum-characters-to-satisfy-one-of-three-conditions", "find-kth-largest-xor-coordinate-value", "building-boxes"]}, {"contest_title": "\u7b2c 226 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 226", "contest_title_slug": "weekly-contest-226", "contest_id": 344, "contest_start_time": 1612060200, "contest_duration": 5400, "user_num": 4034, "question_slugs": ["maximum-number-of-balls-in-a-box", "restore-the-array-from-adjacent-pairs", "can-you-eat-your-favorite-candy-on-your-favorite-day", "palindrome-partitioning-iv"]}, {"contest_title": "\u7b2c 227 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 227", "contest_title_slug": "weekly-contest-227", "contest_id": 346, "contest_start_time": 1612665000, "contest_duration": 5400, "user_num": 3546, "question_slugs": ["check-if-array-is-sorted-and-rotated", "maximum-score-from-removing-stones", "largest-merge-of-two-strings", "closest-subsequence-sum"]}, {"contest_title": "\u7b2c 228 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 228", "contest_title_slug": "weekly-contest-228", "contest_id": 350, "contest_start_time": 1613269800, "contest_duration": 5400, "user_num": 2484, "question_slugs": ["minimum-changes-to-make-alternating-binary-string", "count-number-of-homogenous-substrings", "minimum-limit-of-balls-in-a-bag", "minimum-degree-of-a-connected-trio-in-a-graph"]}, {"contest_title": "\u7b2c 229 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 229", "contest_title_slug": "weekly-contest-229", "contest_id": 352, "contest_start_time": 1613874600, "contest_duration": 5400, "user_num": 3484, "question_slugs": ["merge-strings-alternately", "minimum-number-of-operations-to-move-all-balls-to-each-box", "maximum-score-from-performing-multiplication-operations", "maximize-palindrome-length-from-subsequences"]}, {"contest_title": "\u7b2c 230 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 230", "contest_title_slug": "weekly-contest-230", "contest_id": 356, "contest_start_time": 1614479400, "contest_duration": 5400, "user_num": 3728, "question_slugs": ["count-items-matching-a-rule", "closest-dessert-cost", "equal-sum-arrays-with-minimum-number-of-operations", "car-fleet-ii"]}, {"contest_title": "\u7b2c 231 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 231", "contest_title_slug": "weekly-contest-231", "contest_id": 358, "contest_start_time": 1615084200, "contest_duration": 5400, "user_num": 4668, "question_slugs": ["check-if-binary-string-has-at-most-one-segment-of-ones", "minimum-elements-to-add-to-form-a-given-sum", "number-of-restricted-paths-from-first-to-last-node", "make-the-xor-of-all-segments-equal-to-zero"]}, {"contest_title": "\u7b2c 232 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 232", "contest_title_slug": "weekly-contest-232", "contest_id": 363, "contest_start_time": 1615689000, "contest_duration": 5400, "user_num": 4802, "question_slugs": ["check-if-one-string-swap-can-make-strings-equal", "find-center-of-star-graph", "maximum-average-pass-ratio", "maximum-score-of-a-good-subarray"]}, {"contest_title": "\u7b2c 233 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 233", "contest_title_slug": "weekly-contest-233", "contest_id": 371, "contest_start_time": 1616293800, "contest_duration": 5400, "user_num": 5010, "question_slugs": ["maximum-ascending-subarray-sum", "number-of-orders-in-the-backlog", "maximum-value-at-a-given-index-in-a-bounded-array", "count-pairs-with-xor-in-a-range"]}, {"contest_title": "\u7b2c 234 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 234", "contest_title_slug": "weekly-contest-234", "contest_id": 375, "contest_start_time": 1616898600, "contest_duration": 5400, "user_num": 4998, "question_slugs": ["number-of-different-integers-in-a-string", "minimum-number-of-operations-to-reinitialize-a-permutation", "evaluate-the-bracket-pairs-of-a-string", "maximize-number-of-nice-divisors"]}, {"contest_title": "\u7b2c 235 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 235", "contest_title_slug": "weekly-contest-235", "contest_id": 377, "contest_start_time": 1617503400, "contest_duration": 5400, "user_num": 4494, "question_slugs": ["truncate-sentence", "finding-the-users-active-minutes", "minimum-absolute-sum-difference", "number-of-different-subsequences-gcds"]}, {"contest_title": "\u7b2c 236 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 236", "contest_title_slug": "weekly-contest-236", "contest_id": 391, "contest_start_time": 1618108200, "contest_duration": 5400, "user_num": 5113, "question_slugs": ["sign-of-the-product-of-an-array", "find-the-winner-of-the-circular-game", "minimum-sideway-jumps", "finding-mk-average"]}, {"contest_title": "\u7b2c 237 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 237", "contest_title_slug": "weekly-contest-237", "contest_id": 393, "contest_start_time": 1618713000, "contest_duration": 5400, "user_num": 4577, "question_slugs": ["check-if-the-sentence-is-pangram", "maximum-ice-cream-bars", "single-threaded-cpu", "find-xor-sum-of-all-pairs-bitwise-and"]}, {"contest_title": "\u7b2c 238 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 238", "contest_title_slug": "weekly-contest-238", "contest_id": 397, "contest_start_time": 1619317800, "contest_duration": 5400, "user_num": 3978, "question_slugs": ["sum-of-digits-in-base-k", "frequency-of-the-most-frequent-element", "longest-substring-of-all-vowels-in-order", "maximum-building-height"]}, {"contest_title": "\u7b2c 239 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 239", "contest_title_slug": "weekly-contest-239", "contest_id": 399, "contest_start_time": 1619922600, "contest_duration": 5400, "user_num": 3907, "question_slugs": ["minimum-distance-to-the-target-element", "splitting-a-string-into-descending-consecutive-values", "minimum-adjacent-swaps-to-reach-the-kth-smallest-number", "minimum-interval-to-include-each-query"]}, {"contest_title": "\u7b2c 240 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 240", "contest_title_slug": "weekly-contest-240", "contest_id": 403, "contest_start_time": 1620527400, "contest_duration": 5400, "user_num": 4307, "question_slugs": ["maximum-population-year", "maximum-distance-between-a-pair-of-values", "maximum-subarray-min-product", "largest-color-value-in-a-directed-graph"]}, {"contest_title": "\u7b2c 241 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 241", "contest_title_slug": "weekly-contest-241", "contest_id": 405, "contest_start_time": 1621132200, "contest_duration": 5400, "user_num": 4491, "question_slugs": ["sum-of-all-subset-xor-totals", "minimum-number-of-swaps-to-make-the-binary-string-alternating", "finding-pairs-with-a-certain-sum", "number-of-ways-to-rearrange-sticks-with-k-sticks-visible"]}, {"contest_title": "\u7b2c 242 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 242", "contest_title_slug": "weekly-contest-242", "contest_id": 409, "contest_start_time": 1621737000, "contest_duration": 5400, "user_num": 4306, "question_slugs": ["longer-contiguous-segments-of-ones-than-zeros", "minimum-speed-to-arrive-on-time", "jump-game-vii", "stone-game-viii"]}, {"contest_title": "\u7b2c 243 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 243", "contest_title_slug": "weekly-contest-243", "contest_id": 411, "contest_start_time": 1622341800, "contest_duration": 5400, "user_num": 4493, "question_slugs": ["check-if-word-equals-summation-of-two-words", "maximum-value-after-insertion", "process-tasks-using-servers", "minimum-skips-to-arrive-at-meeting-on-time"]}, {"contest_title": "\u7b2c 244 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 244", "contest_title_slug": "weekly-contest-244", "contest_id": 415, "contest_start_time": 1622946600, "contest_duration": 5400, "user_num": 4430, "question_slugs": ["determine-whether-matrix-can-be-obtained-by-rotation", "reduction-operations-to-make-the-array-elements-equal", "minimum-number-of-flips-to-make-the-binary-string-alternating", "minimum-space-wasted-from-packaging"]}, {"contest_title": "\u7b2c 245 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 245", "contest_title_slug": "weekly-contest-245", "contest_id": 417, "contest_start_time": 1623551400, "contest_duration": 5400, "user_num": 4271, "question_slugs": ["redistribute-characters-to-make-all-strings-equal", "maximum-number-of-removable-characters", "merge-triplets-to-form-target-triplet", "the-earliest-and-latest-rounds-where-players-compete"]}, {"contest_title": "\u7b2c 246 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 246", "contest_title_slug": "weekly-contest-246", "contest_id": 422, "contest_start_time": 1624156200, "contest_duration": 5400, "user_num": 4136, "question_slugs": ["largest-odd-number-in-string", "the-number-of-full-rounds-you-have-played", "count-sub-islands", "minimum-absolute-difference-queries"]}, {"contest_title": "\u7b2c 247 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 247", "contest_title_slug": "weekly-contest-247", "contest_id": 426, "contest_start_time": 1624761000, "contest_duration": 5400, "user_num": 3981, "question_slugs": ["maximum-product-difference-between-two-pairs", "cyclically-rotating-a-grid", "number-of-wonderful-substrings", "count-ways-to-build-rooms-in-an-ant-colony"]}, {"contest_title": "\u7b2c 248 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 248", "contest_title_slug": "weekly-contest-248", "contest_id": 430, "contest_start_time": 1625365800, "contest_duration": 5400, "user_num": 4451, "question_slugs": ["build-array-from-permutation", "eliminate-maximum-number-of-monsters", "count-good-numbers", "longest-common-subpath"]}, {"contest_title": "\u7b2c 249 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 249", "contest_title_slug": "weekly-contest-249", "contest_id": 432, "contest_start_time": 1625970600, "contest_duration": 5400, "user_num": 4335, "question_slugs": ["concatenation-of-array", "unique-length-3-palindromic-subsequences", "painting-a-grid-with-three-different-colors", "merge-bsts-to-create-single-bst"]}, {"contest_title": "\u7b2c 250 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 250", "contest_title_slug": "weekly-contest-250", "contest_id": 436, "contest_start_time": 1626575400, "contest_duration": 5400, "user_num": 4315, "question_slugs": ["maximum-number-of-words-you-can-type", "add-minimum-number-of-rungs", "maximum-number-of-points-with-cost", "maximum-genetic-difference-query"]}, {"contest_title": "\u7b2c 251 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 251", "contest_title_slug": "weekly-contest-251", "contest_id": 438, "contest_start_time": 1627180200, "contest_duration": 5400, "user_num": 4747, "question_slugs": ["sum-of-digits-of-string-after-convert", "largest-number-after-mutating-substring", "maximum-compatibility-score-sum", "delete-duplicate-folders-in-system"]}, {"contest_title": "\u7b2c 252 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 252", "contest_title_slug": "weekly-contest-252", "contest_id": 442, "contest_start_time": 1627785000, "contest_duration": 5400, "user_num": 4647, "question_slugs": ["three-divisors", "maximum-number-of-weeks-for-which-you-can-work", "minimum-garden-perimeter-to-collect-enough-apples", "count-number-of-special-subsequences"]}, {"contest_title": "\u7b2c 253 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 253", "contest_title_slug": "weekly-contest-253", "contest_id": 444, "contest_start_time": 1628389800, "contest_duration": 5400, "user_num": 4570, "question_slugs": ["check-if-string-is-a-prefix-of-array", "remove-stones-to-minimize-the-total", "minimum-number-of-swaps-to-make-the-string-balanced", "find-the-longest-valid-obstacle-course-at-each-position"]}, {"contest_title": "\u7b2c 254 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 254", "contest_title_slug": "weekly-contest-254", "contest_id": 449, "contest_start_time": 1628994600, "contest_duration": 5400, "user_num": 4349, "question_slugs": ["number-of-strings-that-appear-as-substrings-in-word", "array-with-elements-not-equal-to-average-of-neighbors", "minimum-non-zero-product-of-the-array-elements", "last-day-where-you-can-still-cross"]}, {"contest_title": "\u7b2c 255 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 255", "contest_title_slug": "weekly-contest-255", "contest_id": 457, "contest_start_time": 1629599400, "contest_duration": 5400, "user_num": 4333, "question_slugs": ["find-greatest-common-divisor-of-array", "find-unique-binary-string", "minimize-the-difference-between-target-and-chosen-elements", "find-array-given-subset-sums"]}, {"contest_title": "\u7b2c 256 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 256", "contest_title_slug": "weekly-contest-256", "contest_id": 462, "contest_start_time": 1630204200, "contest_duration": 5400, "user_num": 4136, "question_slugs": ["minimum-difference-between-highest-and-lowest-of-k-scores", "find-the-kth-largest-integer-in-the-array", "minimum-number-of-work-sessions-to-finish-the-tasks", "number-of-unique-good-subsequences"]}, {"contest_title": "\u7b2c 257 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 257", "contest_title_slug": "weekly-contest-257", "contest_id": 464, "contest_start_time": 1630809000, "contest_duration": 5400, "user_num": 4278, "question_slugs": ["count-special-quadruplets", "the-number-of-weak-characters-in-the-game", "first-day-where-you-have-been-in-all-the-rooms", "gcd-sort-of-an-array"]}, {"contest_title": "\u7b2c 258 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 258", "contest_title_slug": "weekly-contest-258", "contest_id": 468, "contest_start_time": 1631413800, "contest_duration": 5400, "user_num": 4519, "question_slugs": ["reverse-prefix-of-word", "number-of-pairs-of-interchangeable-rectangles", "maximum-product-of-the-length-of-two-palindromic-subsequences", "smallest-missing-genetic-value-in-each-subtree"]}, {"contest_title": "\u7b2c 259 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 259", "contest_title_slug": "weekly-contest-259", "contest_id": 474, "contest_start_time": 1632018600, "contest_duration": 5400, "user_num": 3775, "question_slugs": ["final-value-of-variable-after-performing-operations", "sum-of-beauty-in-the-array", "detect-squares", "longest-subsequence-repeated-k-times"]}, {"contest_title": "\u7b2c 260 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 260", "contest_title_slug": "weekly-contest-260", "contest_id": 478, "contest_start_time": 1632623400, "contest_duration": 5400, "user_num": 3654, "question_slugs": ["maximum-difference-between-increasing-elements", "grid-game", "check-if-word-can-be-placed-in-crossword", "the-score-of-students-solving-math-expression"]}, {"contest_title": "\u7b2c 261 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 261", "contest_title_slug": "weekly-contest-261", "contest_id": 481, "contest_start_time": 1633228200, "contest_duration": 5400, "user_num": 3368, "question_slugs": ["minimum-moves-to-convert-string", "find-missing-observations", "stone-game-ix", "smallest-k-length-subsequence-with-occurrences-of-a-letter"]}, {"contest_title": "\u7b2c 262 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 262", "contest_title_slug": "weekly-contest-262", "contest_id": 485, "contest_start_time": 1633833000, "contest_duration": 5400, "user_num": 4261, "question_slugs": ["two-out-of-three", "minimum-operations-to-make-a-uni-value-grid", "stock-price-fluctuation", "partition-array-into-two-arrays-to-minimize-sum-difference"]}, {"contest_title": "\u7b2c 263 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 263", "contest_title_slug": "weekly-contest-263", "contest_id": 487, "contest_start_time": 1634437800, "contest_duration": 5400, "user_num": 4572, "question_slugs": ["check-if-numbers-are-ascending-in-a-sentence", "simple-bank-system", "count-number-of-maximum-bitwise-or-subsets", "second-minimum-time-to-reach-destination"]}, {"contest_title": "\u7b2c 264 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 264", "contest_title_slug": "weekly-contest-264", "contest_id": 491, "contest_start_time": 1635042600, "contest_duration": 5400, "user_num": 4659, "question_slugs": ["number-of-valid-words-in-a-sentence", "next-greater-numerically-balanced-number", "count-nodes-with-the-highest-score", "parallel-courses-iii"]}, {"contest_title": "\u7b2c 265 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 265", "contest_title_slug": "weekly-contest-265", "contest_id": 493, "contest_start_time": 1635647400, "contest_duration": 5400, "user_num": 4182, "question_slugs": ["smallest-index-with-equal-value", "find-the-minimum-and-maximum-number-of-nodes-between-critical-points", "minimum-operations-to-convert-number", "check-if-an-original-string-exists-given-two-encoded-strings"]}, {"contest_title": "\u7b2c 266 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 266", "contest_title_slug": "weekly-contest-266", "contest_id": 498, "contest_start_time": 1636252200, "contest_duration": 5400, "user_num": 4385, "question_slugs": ["count-vowel-substrings-of-a-string", "vowels-of-all-substrings", "minimized-maximum-of-products-distributed-to-any-store", "maximum-path-quality-of-a-graph"]}, {"contest_title": "\u7b2c 267 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 267", "contest_title_slug": "weekly-contest-267", "contest_id": 500, "contest_start_time": 1636857000, "contest_duration": 5400, "user_num": 4365, "question_slugs": ["time-needed-to-buy-tickets", "reverse-nodes-in-even-length-groups", "decode-the-slanted-ciphertext", "process-restricted-friend-requests"]}, {"contest_title": "\u7b2c 268 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 268", "contest_title_slug": "weekly-contest-268", "contest_id": 504, "contest_start_time": 1637461800, "contest_duration": 5400, "user_num": 4398, "question_slugs": ["two-furthest-houses-with-different-colors", "watering-plants", "range-frequency-queries", "sum-of-k-mirror-numbers"]}, {"contest_title": "\u7b2c 269 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 269", "contest_title_slug": "weekly-contest-269", "contest_id": 506, "contest_start_time": 1638066600, "contest_duration": 5400, "user_num": 4293, "question_slugs": ["find-target-indices-after-sorting-array", "k-radius-subarray-averages", "removing-minimum-and-maximum-from-array", "find-all-people-with-secret"]}, {"contest_title": "\u7b2c 270 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 270", "contest_title_slug": "weekly-contest-270", "contest_id": 510, "contest_start_time": 1638671400, "contest_duration": 5400, "user_num": 4748, "question_slugs": ["finding-3-digit-even-numbers", "delete-the-middle-node-of-a-linked-list", "step-by-step-directions-from-a-binary-tree-node-to-another", "valid-arrangement-of-pairs"]}, {"contest_title": "\u7b2c 271 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 271", "contest_title_slug": "weekly-contest-271", "contest_id": 512, "contest_start_time": 1639276200, "contest_duration": 5400, "user_num": 4562, "question_slugs": ["rings-and-rods", "sum-of-subarray-ranges", "watering-plants-ii", "maximum-fruits-harvested-after-at-most-k-steps"]}, {"contest_title": "\u7b2c 272 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 272", "contest_title_slug": "weekly-contest-272", "contest_id": 516, "contest_start_time": 1639881000, "contest_duration": 5400, "user_num": 4698, "question_slugs": ["find-first-palindromic-string-in-the-array", "adding-spaces-to-a-string", "number-of-smooth-descent-periods-of-a-stock", "minimum-operations-to-make-the-array-k-increasing"]}, {"contest_title": "\u7b2c 273 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 273", "contest_title_slug": "weekly-contest-273", "contest_id": 518, "contest_start_time": 1640485800, "contest_duration": 5400, "user_num": 4368, "question_slugs": ["a-number-after-a-double-reversal", "execution-of-all-suffix-instructions-staying-in-a-grid", "intervals-between-identical-elements", "recover-the-original-array"]}, {"contest_title": "\u7b2c 274 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 274", "contest_title_slug": "weekly-contest-274", "contest_id": 522, "contest_start_time": 1641090600, "contest_duration": 5400, "user_num": 4109, "question_slugs": ["check-if-all-as-appears-before-all-bs", "number-of-laser-beams-in-a-bank", "destroying-asteroids", "maximum-employees-to-be-invited-to-a-meeting"]}, {"contest_title": "\u7b2c 275 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 275", "contest_title_slug": "weekly-contest-275", "contest_id": 524, "contest_start_time": 1641695400, "contest_duration": 5400, "user_num": 4787, "question_slugs": ["check-if-every-row-and-column-contains-all-numbers", "minimum-swaps-to-group-all-1s-together-ii", "count-words-obtained-after-adding-a-letter", "earliest-possible-day-of-full-bloom"]}, {"contest_title": "\u7b2c 276 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 276", "contest_title_slug": "weekly-contest-276", "contest_id": 528, "contest_start_time": 1642300200, "contest_duration": 5400, "user_num": 5244, "question_slugs": ["divide-a-string-into-groups-of-size-k", "minimum-moves-to-reach-target-score", "solving-questions-with-brainpower", "maximum-running-time-of-n-computers"]}, {"contest_title": "\u7b2c 277 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 277", "contest_title_slug": "weekly-contest-277", "contest_id": 530, "contest_start_time": 1642905000, "contest_duration": 5400, "user_num": 5060, "question_slugs": ["count-elements-with-strictly-smaller-and-greater-elements", "rearrange-array-elements-by-sign", "find-all-lonely-numbers-in-the-array", "maximum-good-people-based-on-statements"]}, {"contest_title": "\u7b2c 278 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 278", "contest_title_slug": "weekly-contest-278", "contest_id": 534, "contest_start_time": 1643509800, "contest_duration": 5400, "user_num": 4643, "question_slugs": ["keep-multiplying-found-values-by-two", "all-divisions-with-the-highest-score-of-a-binary-array", "find-substring-with-given-hash-value", "groups-of-strings"]}, {"contest_title": "\u7b2c 279 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 279", "contest_title_slug": "weekly-contest-279", "contest_id": 536, "contest_start_time": 1644114600, "contest_duration": 5400, "user_num": 4132, "question_slugs": ["sort-even-and-odd-indices-independently", "smallest-value-of-the-rearranged-number", "design-bitset", "minimum-time-to-remove-all-cars-containing-illegal-goods"]}, {"contest_title": "\u7b2c 280 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 280", "contest_title_slug": "weekly-contest-280", "contest_id": 540, "contest_start_time": 1644719400, "contest_duration": 5400, "user_num": 5834, "question_slugs": ["count-operations-to-obtain-zero", "minimum-operations-to-make-the-array-alternating", "removing-minimum-number-of-magic-beans", "maximum-and-sum-of-array"]}, {"contest_title": "\u7b2c 281 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 281", "contest_title_slug": "weekly-contest-281", "contest_id": 542, "contest_start_time": 1645324200, "contest_duration": 6000, "user_num": 6005, "question_slugs": ["count-integers-with-even-digit-sum", "merge-nodes-in-between-zeros", "construct-string-with-repeat-limit", "count-array-pairs-divisible-by-k"]}, {"contest_title": "\u7b2c 282 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 282", "contest_title_slug": "weekly-contest-282", "contest_id": 546, "contest_start_time": 1645929000, "contest_duration": 5400, "user_num": 7164, "question_slugs": ["counting-words-with-a-given-prefix", "minimum-number-of-steps-to-make-two-strings-anagram-ii", "minimum-time-to-complete-trips", "minimum-time-to-finish-the-race"]}, {"contest_title": "\u7b2c 283 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 283", "contest_title_slug": "weekly-contest-283", "contest_id": 551, "contest_start_time": 1646533800, "contest_duration": 5400, "user_num": 7817, "question_slugs": ["cells-in-a-range-on-an-excel-sheet", "append-k-integers-with-minimal-sum", "create-binary-tree-from-descriptions", "replace-non-coprime-numbers-in-array"]}, {"contest_title": "\u7b2c 284 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 284", "contest_title_slug": "weekly-contest-284", "contest_id": 555, "contest_start_time": 1647138600, "contest_duration": 5400, "user_num": 8483, "question_slugs": ["find-all-k-distant-indices-in-an-array", "count-artifacts-that-can-be-extracted", "maximize-the-topmost-element-after-k-moves", "minimum-weighted-subgraph-with-the-required-paths"]}, {"contest_title": "\u7b2c 285 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 285", "contest_title_slug": "weekly-contest-285", "contest_id": 558, "contest_start_time": 1647743400, "contest_duration": 5400, "user_num": 7501, "question_slugs": ["count-hills-and-valleys-in-an-array", "count-collisions-on-a-road", "maximum-points-in-an-archery-competition", "longest-substring-of-one-repeating-character"]}, {"contest_title": "\u7b2c 286 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 286", "contest_title_slug": "weekly-contest-286", "contest_id": 564, "contest_start_time": 1648348200, "contest_duration": 5400, "user_num": 7248, "question_slugs": ["find-the-difference-of-two-arrays", "minimum-deletions-to-make-array-beautiful", "find-palindrome-with-fixed-length", "maximum-value-of-k-coins-from-piles"]}, {"contest_title": "\u7b2c 287 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 287", "contest_title_slug": "weekly-contest-287", "contest_id": 569, "contest_start_time": 1648953000, "contest_duration": 5400, "user_num": 6811, "question_slugs": ["minimum-number-of-operations-to-convert-time", "find-players-with-zero-or-one-losses", "maximum-candies-allocated-to-k-children", "encrypt-and-decrypt-strings"]}, {"contest_title": "\u7b2c 288 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 288", "contest_title_slug": "weekly-contest-288", "contest_id": 573, "contest_start_time": 1649557800, "contest_duration": 5400, "user_num": 6926, "question_slugs": ["largest-number-after-digit-swaps-by-parity", "minimize-result-by-adding-parentheses-to-expression", "maximum-product-after-k-increments", "maximum-total-beauty-of-the-gardens"]}, {"contest_title": "\u7b2c 289 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 289", "contest_title_slug": "weekly-contest-289", "contest_id": 576, "contest_start_time": 1650162600, "contest_duration": 5400, "user_num": 7293, "question_slugs": ["calculate-digit-sum-of-a-string", "minimum-rounds-to-complete-all-tasks", "maximum-trailing-zeros-in-a-cornered-path", "longest-path-with-different-adjacent-characters"]}, {"contest_title": "\u7b2c 290 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 290", "contest_title_slug": "weekly-contest-290", "contest_id": 582, "contest_start_time": 1650767400, "contest_duration": 5400, "user_num": 6275, "question_slugs": ["intersection-of-multiple-arrays", "count-lattice-points-inside-a-circle", "count-number-of-rectangles-containing-each-point", "number-of-flowers-in-full-bloom"]}, {"contest_title": "\u7b2c 291 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 291", "contest_title_slug": "weekly-contest-291", "contest_id": 587, "contest_start_time": 1651372200, "contest_duration": 5400, "user_num": 6574, "question_slugs": ["remove-digit-from-number-to-maximize-result", "minimum-consecutive-cards-to-pick-up", "k-divisible-elements-subarrays", "total-appeal-of-a-string"]}, {"contest_title": "\u7b2c 292 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 292", "contest_title_slug": "weekly-contest-292", "contest_id": 591, "contest_start_time": 1651977000, "contest_duration": 5400, "user_num": 6884, "question_slugs": ["largest-3-same-digit-number-in-string", "count-nodes-equal-to-average-of-subtree", "count-number-of-texts", "check-if-there-is-a-valid-parentheses-string-path"]}, {"contest_title": "\u7b2c 293 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 293", "contest_title_slug": "weekly-contest-293", "contest_id": 593, "contest_start_time": 1652581800, "contest_duration": 5400, "user_num": 7357, "question_slugs": ["find-resultant-array-after-removing-anagrams", "maximum-consecutive-floors-without-special-floors", "largest-combination-with-bitwise-and-greater-than-zero", "count-integers-in-intervals"]}, {"contest_title": "\u7b2c 294 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 294", "contest_title_slug": "weekly-contest-294", "contest_id": 599, "contest_start_time": 1653186600, "contest_duration": 5400, "user_num": 6640, "question_slugs": ["percentage-of-letter-in-string", "maximum-bags-with-full-capacity-of-rocks", "minimum-lines-to-represent-a-line-chart", "sum-of-total-strength-of-wizards"]}, {"contest_title": "\u7b2c 295 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 295", "contest_title_slug": "weekly-contest-295", "contest_id": 605, "contest_start_time": 1653791400, "contest_duration": 5400, "user_num": 6447, "question_slugs": ["rearrange-characters-to-make-target-string", "apply-discount-to-prices", "steps-to-make-array-non-decreasing", "minimum-obstacle-removal-to-reach-corner"]}, {"contest_title": "\u7b2c 296 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 296", "contest_title_slug": "weekly-contest-296", "contest_id": 609, "contest_start_time": 1654396200, "contest_duration": 5400, "user_num": 5721, "question_slugs": ["min-max-game", "partition-array-such-that-maximum-difference-is-k", "replace-elements-in-an-array", "design-a-text-editor"]}, {"contest_title": "\u7b2c 297 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 297", "contest_title_slug": "weekly-contest-297", "contest_id": 611, "contest_start_time": 1655001000, "contest_duration": 5400, "user_num": 5915, "question_slugs": ["calculate-amount-paid-in-taxes", "minimum-path-cost-in-a-grid", "fair-distribution-of-cookies", "naming-a-company"]}, {"contest_title": "\u7b2c 298 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 298", "contest_title_slug": "weekly-contest-298", "contest_id": 615, "contest_start_time": 1655605800, "contest_duration": 5400, "user_num": 6228, "question_slugs": ["greatest-english-letter-in-upper-and-lower-case", "sum-of-numbers-with-units-digit-k", "longest-binary-subsequence-less-than-or-equal-to-k", "selling-pieces-of-wood"]}, {"contest_title": "\u7b2c 299 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 299", "contest_title_slug": "weekly-contest-299", "contest_id": 618, "contest_start_time": 1656210600, "contest_duration": 5400, "user_num": 6108, "question_slugs": ["check-if-matrix-is-x-matrix", "count-number-of-ways-to-place-houses", "maximum-score-of-spliced-array", "minimum-score-after-removals-on-a-tree"]}, {"contest_title": "\u7b2c 300 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 300", "contest_title_slug": "weekly-contest-300", "contest_id": 647, "contest_start_time": 1656815400, "contest_duration": 5400, "user_num": 6792, "question_slugs": ["decode-the-message", "spiral-matrix-iv", "number-of-people-aware-of-a-secret", "number-of-increasing-paths-in-a-grid"]}, {"contest_title": "\u7b2c 301 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 301", "contest_title_slug": "weekly-contest-301", "contest_id": 649, "contest_start_time": 1657420200, "contest_duration": 5400, "user_num": 7133, "question_slugs": ["minimum-amount-of-time-to-fill-cups", "smallest-number-in-infinite-set", "move-pieces-to-obtain-a-string", "count-the-number-of-ideal-arrays"]}, {"contest_title": "\u7b2c 302 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 302", "contest_title_slug": "weekly-contest-302", "contest_id": 653, "contest_start_time": 1658025000, "contest_duration": 5400, "user_num": 7092, "question_slugs": ["maximum-number-of-pairs-in-array", "max-sum-of-a-pair-with-equal-sum-of-digits", "query-kth-smallest-trimmed-number", "minimum-deletions-to-make-array-divisible"]}, {"contest_title": "\u7b2c 303 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 303", "contest_title_slug": "weekly-contest-303", "contest_id": 655, "contest_start_time": 1658629800, "contest_duration": 5400, "user_num": 7032, "question_slugs": ["first-letter-to-appear-twice", "equal-row-and-column-pairs", "design-a-food-rating-system", "number-of-excellent-pairs"]}, {"contest_title": "\u7b2c 304 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 304", "contest_title_slug": "weekly-contest-304", "contest_id": 659, "contest_start_time": 1659234600, "contest_duration": 5400, "user_num": 7372, "question_slugs": ["make-array-zero-by-subtracting-equal-amounts", "maximum-number-of-groups-entering-a-competition", "find-closest-node-to-given-two-nodes", "longest-cycle-in-a-graph"]}, {"contest_title": "\u7b2c 305 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 305", "contest_title_slug": "weekly-contest-305", "contest_id": 663, "contest_start_time": 1659839400, "contest_duration": 5400, "user_num": 7465, "question_slugs": ["number-of-arithmetic-triplets", "reachable-nodes-with-restrictions", "check-if-there-is-a-valid-partition-for-the-array", "longest-ideal-subsequence"]}, {"contest_title": "\u7b2c 306 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 306", "contest_title_slug": "weekly-contest-306", "contest_id": 669, "contest_start_time": 1660444200, "contest_duration": 5400, "user_num": 7500, "question_slugs": ["largest-local-values-in-a-matrix", "node-with-highest-edge-score", "construct-smallest-number-from-di-string", "count-special-integers"]}, {"contest_title": "\u7b2c 307 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 307", "contest_title_slug": "weekly-contest-307", "contest_id": 671, "contest_start_time": 1661049000, "contest_duration": 5400, "user_num": 7064, "question_slugs": ["minimum-hours-of-training-to-win-a-competition", "largest-palindromic-number", "amount-of-time-for-binary-tree-to-be-infected", "find-the-k-sum-of-an-array"]}, {"contest_title": "\u7b2c 308 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 308", "contest_title_slug": "weekly-contest-308", "contest_id": 689, "contest_start_time": 1661653800, "contest_duration": 5400, "user_num": 6394, "question_slugs": ["longest-subsequence-with-limited-sum", "removing-stars-from-a-string", "minimum-amount-of-time-to-collect-garbage", "build-a-matrix-with-conditions"]}, {"contest_title": "\u7b2c 309 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 309", "contest_title_slug": "weekly-contest-309", "contest_id": 693, "contest_start_time": 1662258600, "contest_duration": 5400, "user_num": 7972, "question_slugs": ["check-distances-between-same-letters", "number-of-ways-to-reach-a-position-after-exactly-k-steps", "longest-nice-subarray", "meeting-rooms-iii"]}, {"contest_title": "\u7b2c 310 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 310", "contest_title_slug": "weekly-contest-310", "contest_id": 704, "contest_start_time": 1662863400, "contest_duration": 5400, "user_num": 6081, "question_slugs": ["most-frequent-even-element", "optimal-partition-of-string", "divide-intervals-into-minimum-number-of-groups", "longest-increasing-subsequence-ii"]}, {"contest_title": "\u7b2c 311 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 311", "contest_title_slug": "weekly-contest-311", "contest_id": 741, "contest_start_time": 1663468200, "contest_duration": 5400, "user_num": 6710, "question_slugs": ["smallest-even-multiple", "length-of-the-longest-alphabetical-continuous-substring", "reverse-odd-levels-of-binary-tree", "sum-of-prefix-scores-of-strings"]}, {"contest_title": "\u7b2c 312 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 312", "contest_title_slug": "weekly-contest-312", "contest_id": 746, "contest_start_time": 1664073000, "contest_duration": 5400, "user_num": 6638, "question_slugs": ["sort-the-people", "longest-subarray-with-maximum-bitwise-and", "find-all-good-indices", "number-of-good-paths"]}, {"contest_title": "\u7b2c 313 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 313", "contest_title_slug": "weekly-contest-313", "contest_id": 750, "contest_start_time": 1664677800, "contest_duration": 5400, "user_num": 5445, "question_slugs": ["number-of-common-factors", "maximum-sum-of-an-hourglass", "minimize-xor", "maximum-deletions-on-a-string"]}, {"contest_title": "\u7b2c 314 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 314", "contest_title_slug": "weekly-contest-314", "contest_id": 756, "contest_start_time": 1665282600, "contest_duration": 5400, "user_num": 4838, "question_slugs": ["the-employee-that-worked-on-the-longest-task", "find-the-original-array-of-prefix-xor", "using-a-robot-to-print-the-lexicographically-smallest-string", "paths-in-matrix-whose-sum-is-divisible-by-k"]}, {"contest_title": "\u7b2c 315 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 315", "contest_title_slug": "weekly-contest-315", "contest_id": 759, "contest_start_time": 1665887400, "contest_duration": 5400, "user_num": 6490, "question_slugs": ["largest-positive-integer-that-exists-with-its-negative", "count-number-of-distinct-integers-after-reverse-operations", "sum-of-number-and-its-reverse", "count-subarrays-with-fixed-bounds"]}, {"contest_title": "\u7b2c 316 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 316", "contest_title_slug": "weekly-contest-316", "contest_id": 764, "contest_start_time": 1666492200, "contest_duration": 5400, "user_num": 6387, "question_slugs": ["determine-if-two-events-have-conflict", "number-of-subarrays-with-gcd-equal-to-k", "minimum-cost-to-make-array-equal", "minimum-number-of-operations-to-make-arrays-similar"]}, {"contest_title": "\u7b2c 317 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 317", "contest_title_slug": "weekly-contest-317", "contest_id": 767, "contest_start_time": 1667097000, "contest_duration": 5400, "user_num": 5660, "question_slugs": ["average-value-of-even-numbers-that-are-divisible-by-three", "most-popular-video-creator", "minimum-addition-to-make-integer-beautiful", "height-of-binary-tree-after-subtree-removal-queries"]}, {"contest_title": "\u7b2c 318 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 318", "contest_title_slug": "weekly-contest-318", "contest_id": 771, "contest_start_time": 1667701800, "contest_duration": 5400, "user_num": 5670, "question_slugs": ["apply-operations-to-an-array", "maximum-sum-of-distinct-subarrays-with-length-k", "total-cost-to-hire-k-workers", "minimum-total-distance-traveled"]}, {"contest_title": "\u7b2c 319 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 319", "contest_title_slug": "weekly-contest-319", "contest_id": 773, "contest_start_time": 1668306600, "contest_duration": 5400, "user_num": 6175, "question_slugs": ["convert-the-temperature", "number-of-subarrays-with-lcm-equal-to-k", "minimum-number-of-operations-to-sort-a-binary-tree-by-level", "maximum-number-of-non-overlapping-palindrome-substrings"]}, {"contest_title": "\u7b2c 320 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 320", "contest_title_slug": "weekly-contest-320", "contest_id": 777, "contest_start_time": 1668911400, "contest_duration": 5400, "user_num": 5678, "question_slugs": ["number-of-unequal-triplets-in-array", "closest-nodes-queries-in-a-binary-search-tree", "minimum-fuel-cost-to-report-to-the-capital", "number-of-beautiful-partitions"]}, {"contest_title": "\u7b2c 321 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 321", "contest_title_slug": "weekly-contest-321", "contest_id": 779, "contest_start_time": 1669516200, "contest_duration": 5400, "user_num": 5115, "question_slugs": ["find-the-pivot-integer", "append-characters-to-string-to-make-subsequence", "remove-nodes-from-linked-list", "count-subarrays-with-median-k"]}, {"contest_title": "\u7b2c 322 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 322", "contest_title_slug": "weekly-contest-322", "contest_id": 783, "contest_start_time": 1670121000, "contest_duration": 5400, "user_num": 5085, "question_slugs": ["circular-sentence", "divide-players-into-teams-of-equal-skill", "minimum-score-of-a-path-between-two-cities", "divide-nodes-into-the-maximum-number-of-groups"]}, {"contest_title": "\u7b2c 323 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 323", "contest_title_slug": "weekly-contest-323", "contest_id": 785, "contest_start_time": 1670725800, "contest_duration": 5400, "user_num": 4671, "question_slugs": ["delete-greatest-value-in-each-row", "longest-square-streak-in-an-array", "design-memory-allocator", "maximum-number-of-points-from-grid-queries"]}, {"contest_title": "\u7b2c 324 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 324", "contest_title_slug": "weekly-contest-324", "contest_id": 790, "contest_start_time": 1671330600, "contest_duration": 5400, "user_num": 4167, "question_slugs": ["count-pairs-of-similar-strings", "smallest-value-after-replacing-with-sum-of-prime-factors", "add-edges-to-make-degrees-of-all-nodes-even", "cycle-length-queries-in-a-tree"]}, {"contest_title": "\u7b2c 325 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 325", "contest_title_slug": "weekly-contest-325", "contest_id": 795, "contest_start_time": 1671935400, "contest_duration": 5400, "user_num": 3530, "question_slugs": ["shortest-distance-to-target-string-in-a-circular-array", "take-k-of-each-character-from-left-and-right", "maximum-tastiness-of-candy-basket", "number-of-great-partitions"]}, {"contest_title": "\u7b2c 326 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 326", "contest_title_slug": "weekly-contest-326", "contest_id": 799, "contest_start_time": 1672540200, "contest_duration": 5400, "user_num": 3873, "question_slugs": ["count-the-digits-that-divide-a-number", "distinct-prime-factors-of-product-of-array", "partition-string-into-substrings-with-values-at-most-k", "closest-prime-numbers-in-range"]}, {"contest_title": "\u7b2c 327 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 327", "contest_title_slug": "weekly-contest-327", "contest_id": 801, "contest_start_time": 1673145000, "contest_duration": 5400, "user_num": 4518, "question_slugs": ["maximum-count-of-positive-integer-and-negative-integer", "maximal-score-after-applying-k-operations", "make-number-of-distinct-characters-equal", "time-to-cross-a-bridge"]}, {"contest_title": "\u7b2c 328 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 328", "contest_title_slug": "weekly-contest-328", "contest_id": 805, "contest_start_time": 1673749800, "contest_duration": 5400, "user_num": 4776, "question_slugs": ["difference-between-element-sum-and-digit-sum-of-an-array", "increment-submatrices-by-one", "count-the-number-of-good-subarrays", "difference-between-maximum-and-minimum-price-sum"]}, {"contest_title": "\u7b2c 329 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 329", "contest_title_slug": "weekly-contest-329", "contest_id": 807, "contest_start_time": 1674354600, "contest_duration": 5400, "user_num": 2591, "question_slugs": ["alternating-digit-sum", "sort-the-students-by-their-kth-score", "apply-bitwise-operations-to-make-strings-equal", "minimum-cost-to-split-an-array"]}, {"contest_title": "\u7b2c 330 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 330", "contest_title_slug": "weekly-contest-330", "contest_id": 811, "contest_start_time": 1674959400, "contest_duration": 5400, "user_num": 3399, "question_slugs": ["count-distinct-numbers-on-board", "count-collisions-of-monkeys-on-a-polygon", "put-marbles-in-bags", "count-increasing-quadruplets"]}, {"contest_title": "\u7b2c 331 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 331", "contest_title_slug": "weekly-contest-331", "contest_id": 813, "contest_start_time": 1675564200, "contest_duration": 5400, "user_num": 4256, "question_slugs": ["take-gifts-from-the-richest-pile", "count-vowel-strings-in-ranges", "house-robber-iv", "rearranging-fruits"]}, {"contest_title": "\u7b2c 332 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 332", "contest_title_slug": "weekly-contest-332", "contest_id": 817, "contest_start_time": 1676169000, "contest_duration": 5400, "user_num": 4547, "question_slugs": ["find-the-array-concatenation-value", "count-the-number-of-fair-pairs", "substring-xor-queries", "subsequence-with-the-minimum-score"]}, {"contest_title": "\u7b2c 333 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 333", "contest_title_slug": "weekly-contest-333", "contest_id": 819, "contest_start_time": 1676773800, "contest_duration": 5400, "user_num": 4969, "question_slugs": ["merge-two-2d-arrays-by-summing-values", "minimum-operations-to-reduce-an-integer-to-0", "count-the-number-of-square-free-subsets", "find-the-string-with-lcp"]}, {"contest_title": "\u7b2c 334 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 334", "contest_title_slug": "weekly-contest-334", "contest_id": 823, "contest_start_time": 1677378600, "contest_duration": 5400, "user_num": 5501, "question_slugs": ["left-and-right-sum-differences", "find-the-divisibility-array-of-a-string", "find-the-maximum-number-of-marked-indices", "minimum-time-to-visit-a-cell-in-a-grid"]}, {"contest_title": "\u7b2c 335 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 335", "contest_title_slug": "weekly-contest-335", "contest_id": 825, "contest_start_time": 1677983400, "contest_duration": 5400, "user_num": 6019, "question_slugs": ["pass-the-pillow", "kth-largest-sum-in-a-binary-tree", "split-the-array-to-make-coprime-products", "number-of-ways-to-earn-points"]}, {"contest_title": "\u7b2c 336 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 336", "contest_title_slug": "weekly-contest-336", "contest_id": 833, "contest_start_time": 1678588200, "contest_duration": 5400, "user_num": 5897, "question_slugs": ["count-the-number-of-vowel-strings-in-range", "rearrange-array-to-maximize-prefix-score", "count-the-number-of-beautiful-subarrays", "minimum-time-to-complete-all-tasks"]}, {"contest_title": "\u7b2c 337 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 337", "contest_title_slug": "weekly-contest-337", "contest_id": 839, "contest_start_time": 1679193000, "contest_duration": 5400, "user_num": 5628, "question_slugs": ["number-of-even-and-odd-bits", "check-knight-tour-configuration", "the-number-of-beautiful-subsets", "smallest-missing-non-negative-integer-after-operations"]}, {"contest_title": "\u7b2c 338 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 338", "contest_title_slug": "weekly-contest-338", "contest_id": 843, "contest_start_time": 1679797800, "contest_duration": 5400, "user_num": 5594, "question_slugs": ["k-items-with-the-maximum-sum", "prime-subtraction-operation", "minimum-operations-to-make-all-array-elements-equal", "collect-coins-in-a-tree"]}, {"contest_title": "\u7b2c 339 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 339", "contest_title_slug": "weekly-contest-339", "contest_id": 850, "contest_start_time": 1680402600, "contest_duration": 5400, "user_num": 5180, "question_slugs": ["find-the-longest-balanced-substring-of-a-binary-string", "convert-an-array-into-a-2d-array-with-conditions", "mice-and-cheese", "minimum-reverse-operations"]}, {"contest_title": "\u7b2c 340 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 340", "contest_title_slug": "weekly-contest-340", "contest_id": 854, "contest_start_time": 1681007400, "contest_duration": 5400, "user_num": 4937, "question_slugs": ["prime-in-diagonal", "sum-of-distances", "minimize-the-maximum-difference-of-pairs", "minimum-number-of-visited-cells-in-a-grid"]}, {"contest_title": "\u7b2c 341 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 341", "contest_title_slug": "weekly-contest-341", "contest_id": 856, "contest_start_time": 1681612200, "contest_duration": 5400, "user_num": 4792, "question_slugs": ["row-with-maximum-ones", "find-the-maximum-divisibility-score", "minimum-additions-to-make-valid-string", "minimize-the-total-price-of-the-trips"]}, {"contest_title": "\u7b2c 342 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 342", "contest_title_slug": "weekly-contest-342", "contest_id": 860, "contest_start_time": 1682217000, "contest_duration": 5400, "user_num": 3702, "question_slugs": ["calculate-delayed-arrival-time", "sum-multiples", "sliding-subarray-beauty", "minimum-number-of-operations-to-make-all-array-elements-equal-to-1"]}, {"contest_title": "\u7b2c 343 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 343", "contest_title_slug": "weekly-contest-343", "contest_id": 863, "contest_start_time": 1682821800, "contest_duration": 5400, "user_num": 3313, "question_slugs": ["determine-the-winner-of-a-bowling-game", "first-completely-painted-row-or-column", "minimum-cost-of-a-path-with-special-roads", "lexicographically-smallest-beautiful-string"]}, {"contest_title": "\u7b2c 344 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 344", "contest_title_slug": "weekly-contest-344", "contest_id": 867, "contest_start_time": 1683426600, "contest_duration": 5400, "user_num": 3986, "question_slugs": ["find-the-distinct-difference-array", "frequency-tracker", "number-of-adjacent-elements-with-the-same-color", "make-costs-of-paths-equal-in-a-binary-tree"]}, {"contest_title": "\u7b2c 345 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 345", "contest_title_slug": "weekly-contest-345", "contest_id": 870, "contest_start_time": 1684031400, "contest_duration": 5400, "user_num": 4165, "question_slugs": ["find-the-losers-of-the-circular-game", "neighboring-bitwise-xor", "maximum-number-of-moves-in-a-grid", "count-the-number-of-complete-components"]}, {"contest_title": "\u7b2c 346 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 346", "contest_title_slug": "weekly-contest-346", "contest_id": 874, "contest_start_time": 1684636200, "contest_duration": 5400, "user_num": 4035, "question_slugs": ["minimum-string-length-after-removing-substrings", "lexicographically-smallest-palindrome", "find-the-punishment-number-of-an-integer", "modify-graph-edge-weights"]}, {"contest_title": "\u7b2c 347 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 347", "contest_title_slug": "weekly-contest-347", "contest_id": 876, "contest_start_time": 1685241000, "contest_duration": 5400, "user_num": 3836, "question_slugs": ["remove-trailing-zeros-from-a-string", "difference-of-number-of-distinct-values-on-diagonals", "minimum-cost-to-make-all-characters-equal", "maximum-strictly-increasing-cells-in-a-matrix"]}, {"contest_title": "\u7b2c 348 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 348", "contest_title_slug": "weekly-contest-348", "contest_id": 880, "contest_start_time": 1685845800, "contest_duration": 5400, "user_num": 3909, "question_slugs": ["minimize-string-length", "semi-ordered-permutation", "sum-of-matrix-after-queries", "count-of-integers"]}, {"contest_title": "\u7b2c 349 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 349", "contest_title_slug": "weekly-contest-349", "contest_id": 882, "contest_start_time": 1686450600, "contest_duration": 5400, "user_num": 3714, "question_slugs": ["neither-minimum-nor-maximum", "lexicographically-smallest-string-after-substring-operation", "collecting-chocolates", "maximum-sum-queries"]}, {"contest_title": "\u7b2c 350 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 350", "contest_title_slug": "weekly-contest-350", "contest_id": 886, "contest_start_time": 1687055400, "contest_duration": 5400, "user_num": 3580, "question_slugs": ["total-distance-traveled", "find-the-value-of-the-partition", "special-permutations", "painting-the-walls"]}, {"contest_title": "\u7b2c 351 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 351", "contest_title_slug": "weekly-contest-351", "contest_id": 888, "contest_start_time": 1687660200, "contest_duration": 5400, "user_num": 2471, "question_slugs": ["number-of-beautiful-pairs", "minimum-operations-to-make-the-integer-zero", "ways-to-split-array-into-good-subarrays", "robot-collisions"]}, {"contest_title": "\u7b2c 352 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 352", "contest_title_slug": "weekly-contest-352", "contest_id": 892, "contest_start_time": 1688265000, "contest_duration": 5400, "user_num": 3437, "question_slugs": ["longest-even-odd-subarray-with-threshold", "prime-pairs-with-target-sum", "continuous-subarrays", "sum-of-imbalance-numbers-of-all-subarrays"]}, {"contest_title": "\u7b2c 353 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 353", "contest_title_slug": "weekly-contest-353", "contest_id": 894, "contest_start_time": 1688869800, "contest_duration": 5400, "user_num": 4113, "question_slugs": ["find-the-maximum-achievable-number", "maximum-number-of-jumps-to-reach-the-last-index", "longest-non-decreasing-subarray-from-two-arrays", "apply-operations-to-make-all-array-elements-equal-to-zero"]}, {"contest_title": "\u7b2c 354 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 354", "contest_title_slug": "weekly-contest-354", "contest_id": 898, "contest_start_time": 1689474600, "contest_duration": 5400, "user_num": 3957, "question_slugs": ["sum-of-squares-of-special-elements", "maximum-beauty-of-an-array-after-applying-operation", "minimum-index-of-a-valid-split", "length-of-the-longest-valid-substring"]}, {"contest_title": "\u7b2c 355 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 355", "contest_title_slug": "weekly-contest-355", "contest_id": 900, "contest_start_time": 1690079400, "contest_duration": 5400, "user_num": 4112, "question_slugs": ["split-strings-by-separator", "largest-element-in-an-array-after-merge-operations", "maximum-number-of-groups-with-increasing-length", "count-paths-that-can-form-a-palindrome-in-a-tree"]}, {"contest_title": "\u7b2c 356 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 356", "contest_title_slug": "weekly-contest-356", "contest_id": 904, "contest_start_time": 1690684200, "contest_duration": 5400, "user_num": 4082, "question_slugs": ["number-of-employees-who-met-the-target", "count-complete-subarrays-in-an-array", "shortest-string-that-contains-three-strings", "count-stepping-numbers-in-range"]}, {"contest_title": "\u7b2c 357 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 357", "contest_title_slug": "weekly-contest-357", "contest_id": 906, "contest_start_time": 1691289000, "contest_duration": 5400, "user_num": 4265, "question_slugs": ["faulty-keyboard", "check-if-it-is-possible-to-split-array", "find-the-safest-path-in-a-grid", "maximum-elegance-of-a-k-length-subsequence"]}, {"contest_title": "\u7b2c 358 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 358", "contest_title_slug": "weekly-contest-358", "contest_id": 910, "contest_start_time": 1691893800, "contest_duration": 5400, "user_num": 4475, "question_slugs": ["max-pair-sum-in-an-array", "double-a-number-represented-as-a-linked-list", "minimum-absolute-difference-between-elements-with-constraint", "apply-operations-to-maximize-score"]}, {"contest_title": "\u7b2c 359 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 359", "contest_title_slug": "weekly-contest-359", "contest_id": 913, "contest_start_time": 1692498600, "contest_duration": 5400, "user_num": 4101, "question_slugs": ["check-if-a-string-is-an-acronym-of-words", "determine-the-minimum-sum-of-a-k-avoiding-array", "maximize-the-profit-as-the-salesman", "find-the-longest-equal-subarray"]}, {"contest_title": "\u7b2c 360 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 360", "contest_title_slug": "weekly-contest-360", "contest_id": 918, "contest_start_time": 1693103400, "contest_duration": 5400, "user_num": 4496, "question_slugs": ["furthest-point-from-origin", "find-the-minimum-possible-sum-of-a-beautiful-array", "minimum-operations-to-form-subsequence-with-target-sum", "maximize-value-of-function-in-a-ball-passing-game"]}, {"contest_title": "\u7b2c 361 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 361", "contest_title_slug": "weekly-contest-361", "contest_id": 920, "contest_start_time": 1693708200, "contest_duration": 5400, "user_num": 4170, "question_slugs": ["count-symmetric-integers", "minimum-operations-to-make-a-special-number", "count-of-interesting-subarrays", "minimum-edge-weight-equilibrium-queries-in-a-tree"]}, {"contest_title": "\u7b2c 362 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 362", "contest_title_slug": "weekly-contest-362", "contest_id": 924, "contest_start_time": 1694313000, "contest_duration": 5400, "user_num": 4800, "question_slugs": ["points-that-intersect-with-cars", "determine-if-a-cell-is-reachable-at-a-given-time", "minimum-moves-to-spread-stones-over-grid", "string-transformation"]}, {"contest_title": "\u7b2c 363 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 363", "contest_title_slug": "weekly-contest-363", "contest_id": 926, "contest_start_time": 1694917800, "contest_duration": 5400, "user_num": 4768, "question_slugs": ["sum-of-values-at-indices-with-k-set-bits", "happy-students", "maximum-number-of-alloys", "maximum-element-sum-of-a-complete-subset-of-indices"]}, {"contest_title": "\u7b2c 364 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 364", "contest_title_slug": "weekly-contest-364", "contest_id": 930, "contest_start_time": 1695522600, "contest_duration": 5400, "user_num": 4304, "question_slugs": ["maximum-odd-binary-number", "beautiful-towers-i", "beautiful-towers-ii", "count-valid-paths-in-a-tree"]}, {"contest_title": "\u7b2c 365 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 365", "contest_title_slug": "weekly-contest-365", "contest_id": 932, "contest_start_time": 1696127400, "contest_duration": 5400, "user_num": 2909, "question_slugs": ["maximum-value-of-an-ordered-triplet-i", "maximum-value-of-an-ordered-triplet-ii", "minimum-size-subarray-in-infinite-array", "count-visited-nodes-in-a-directed-graph"]}, {"contest_title": "\u7b2c 366 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 366", "contest_title_slug": "weekly-contest-366", "contest_id": 936, "contest_start_time": 1696732200, "contest_duration": 5400, "user_num": 2790, "question_slugs": ["divisible-and-non-divisible-sums-difference", "minimum-processing-time", "apply-operations-to-make-two-strings-equal", "apply-operations-on-array-to-maximize-sum-of-squares"]}, {"contest_title": "\u7b2c 367 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 367", "contest_title_slug": "weekly-contest-367", "contest_id": 938, "contest_start_time": 1697337000, "contest_duration": 5400, "user_num": 4317, "question_slugs": ["find-indices-with-index-and-value-difference-i", "shortest-and-lexicographically-smallest-beautiful-string", "find-indices-with-index-and-value-difference-ii", "construct-product-matrix"]}, {"contest_title": "\u7b2c 368 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 368", "contest_title_slug": "weekly-contest-368", "contest_id": 942, "contest_start_time": 1697941800, "contest_duration": 5400, "user_num": 5002, "question_slugs": ["minimum-sum-of-mountain-triplets-i", "minimum-sum-of-mountain-triplets-ii", "minimum-number-of-groups-to-create-a-valid-assignment", "minimum-changes-to-make-k-semi-palindromes"]}, {"contest_title": "\u7b2c 369 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 369", "contest_title_slug": "weekly-contest-369", "contest_id": 945, "contest_start_time": 1698546600, "contest_duration": 5400, "user_num": 4121, "question_slugs": ["find-the-k-or-of-an-array", "minimum-equal-sum-of-two-arrays-after-replacing-zeros", "minimum-increment-operations-to-make-array-beautiful", "maximum-points-after-collecting-coins-from-all-nodes"]}, {"contest_title": "\u7b2c 370 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 370", "contest_title_slug": "weekly-contest-370", "contest_id": 950, "contest_start_time": 1699151400, "contest_duration": 5400, "user_num": 3983, "question_slugs": ["find-champion-i", "find-champion-ii", "maximum-score-after-applying-operations-on-a-tree", "maximum-balanced-subsequence-sum"]}, {"contest_title": "\u7b2c 371 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 371", "contest_title_slug": "weekly-contest-371", "contest_id": 952, "contest_start_time": 1699756200, "contest_duration": 5400, "user_num": 3637, "question_slugs": ["maximum-strong-pair-xor-i", "high-access-employees", "minimum-operations-to-maximize-last-elements-in-arrays", "maximum-strong-pair-xor-ii"]}, {"contest_title": "\u7b2c 372 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 372", "contest_title_slug": "weekly-contest-372", "contest_id": 956, "contest_start_time": 1700361000, "contest_duration": 5400, "user_num": 3920, "question_slugs": ["make-three-strings-equal", "separate-black-and-white-balls", "maximum-xor-product", "find-building-where-alice-and-bob-can-meet"]}, {"contest_title": "\u7b2c 373 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 373", "contest_title_slug": "weekly-contest-373", "contest_id": 958, "contest_start_time": 1700965800, "contest_duration": 5400, "user_num": 3577, "question_slugs": ["matrix-similarity-after-cyclic-shifts", "count-beautiful-substrings-i", "make-lexicographically-smallest-array-by-swapping-elements", "count-beautiful-substrings-ii"]}, {"contest_title": "\u7b2c 374 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 374", "contest_title_slug": "weekly-contest-374", "contest_id": 962, "contest_start_time": 1701570600, "contest_duration": 5400, "user_num": 4053, "question_slugs": ["find-the-peaks", "minimum-number-of-coins-to-be-added", "count-complete-substrings", "count-the-number-of-infection-sequences"]}, {"contest_title": "\u7b2c 375 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 375", "contest_title_slug": "weekly-contest-375", "contest_id": 964, "contest_start_time": 1702175400, "contest_duration": 5400, "user_num": 3518, "question_slugs": ["count-tested-devices-after-test-operations", "double-modular-exponentiation", "count-subarrays-where-max-element-appears-at-least-k-times", "count-the-number-of-good-partitions"]}, {"contest_title": "\u7b2c 376 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 376", "contest_title_slug": "weekly-contest-376", "contest_id": 968, "contest_start_time": 1702780200, "contest_duration": 5400, "user_num": 3409, "question_slugs": ["find-missing-and-repeated-values", "divide-array-into-arrays-with-max-difference", "minimum-cost-to-make-array-equalindromic", "apply-operations-to-maximize-frequency-score"]}, {"contest_title": "\u7b2c 377 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 377", "contest_title_slug": "weekly-contest-377", "contest_id": 970, "contest_start_time": 1703385000, "contest_duration": 5400, "user_num": 3148, "question_slugs": ["minimum-number-game", "maximum-square-area-by-removing-fences-from-a-field", "minimum-cost-to-convert-string-i", "minimum-cost-to-convert-string-ii"]}, {"contest_title": "\u7b2c 378 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 378", "contest_title_slug": "weekly-contest-378", "contest_id": 974, "contest_start_time": 1703989800, "contest_duration": 5400, "user_num": 2747, "question_slugs": ["check-if-bitwise-or-has-trailing-zeros", "find-longest-special-substring-that-occurs-thrice-i", "find-longest-special-substring-that-occurs-thrice-ii", "palindrome-rearrangement-queries"]}, {"contest_title": "\u7b2c 379 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 379", "contest_title_slug": "weekly-contest-379", "contest_id": 976, "contest_start_time": 1704594600, "contest_duration": 5400, "user_num": 3117, "question_slugs": ["maximum-area-of-longest-diagonal-rectangle", "minimum-moves-to-capture-the-queen", "maximum-size-of-a-set-after-removals", "maximize-the-number-of-partitions-after-operations"]}, {"contest_title": "\u7b2c 380 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 380", "contest_title_slug": "weekly-contest-380", "contest_id": 980, "contest_start_time": 1705199400, "contest_duration": 5400, "user_num": 3325, "question_slugs": ["count-elements-with-maximum-frequency", "find-beautiful-indices-in-the-given-array-i", "maximum-number-that-sum-of-the-prices-is-less-than-or-equal-to-k", "find-beautiful-indices-in-the-given-array-ii"]}, {"contest_title": "\u7b2c 381 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 381", "contest_title_slug": "weekly-contest-381", "contest_id": 982, "contest_start_time": 1705804200, "contest_duration": 5400, "user_num": 3737, "question_slugs": ["minimum-number-of-pushes-to-type-word-i", "count-the-number-of-houses-at-a-certain-distance-i", "minimum-number-of-pushes-to-type-word-ii", "count-the-number-of-houses-at-a-certain-distance-ii"]}, {"contest_title": "\u7b2c 382 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 382", "contest_title_slug": "weekly-contest-382", "contest_id": 986, "contest_start_time": 1706409000, "contest_duration": 5400, "user_num": 3134, "question_slugs": ["number-of-changing-keys", "find-the-maximum-number-of-elements-in-subset", "alice-and-bob-playing-flower-game", "minimize-or-of-remaining-elements-using-operations"]}, {"contest_title": "\u7b2c 383 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 383", "contest_title_slug": "weekly-contest-383", "contest_id": 988, "contest_start_time": 1707013800, "contest_duration": 5400, "user_num": 2691, "question_slugs": ["ant-on-the-boundary", "minimum-time-to-revert-word-to-initial-state-i", "find-the-grid-of-region-average", "minimum-time-to-revert-word-to-initial-state-ii"]}, {"contest_title": "\u7b2c 384 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 384", "contest_title_slug": "weekly-contest-384", "contest_id": 992, "contest_start_time": 1707618600, "contest_duration": 5400, "user_num": 1652, "question_slugs": ["modify-the-matrix", "number-of-subarrays-that-match-a-pattern-i", "maximum-palindromes-after-operations", "number-of-subarrays-that-match-a-pattern-ii"]}, {"contest_title": "\u7b2c 385 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 385", "contest_title_slug": "weekly-contest-385", "contest_id": 994, "contest_start_time": 1708223400, "contest_duration": 5400, "user_num": 2382, "question_slugs": ["count-prefix-and-suffix-pairs-i", "find-the-length-of-the-longest-common-prefix", "most-frequent-prime", "count-prefix-and-suffix-pairs-ii"]}, {"contest_title": "\u7b2c 386 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 386", "contest_title_slug": "weekly-contest-386", "contest_id": 998, "contest_start_time": 1708828200, "contest_duration": 5400, "user_num": 2731, "question_slugs": ["split-the-array", "find-the-largest-area-of-square-inside-two-rectangles", "earliest-second-to-mark-indices-i", "earliest-second-to-mark-indices-ii"]}, {"contest_title": "\u7b2c 387 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 387", "contest_title_slug": "weekly-contest-387", "contest_id": 1000, "contest_start_time": 1709433000, "contest_duration": 5400, "user_num": 3694, "question_slugs": ["distribute-elements-into-two-arrays-i", "count-submatrices-with-top-left-element-and-sum-less-than-k", "minimum-operations-to-write-the-letter-y-on-a-grid", "distribute-elements-into-two-arrays-ii"]}, {"contest_title": "\u7b2c 388 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 388", "contest_title_slug": "weekly-contest-388", "contest_id": 1004, "contest_start_time": 1710037800, "contest_duration": 5400, "user_num": 4291, "question_slugs": ["apple-redistribution-into-boxes", "maximize-happiness-of-selected-children", "shortest-uncommon-substring-in-an-array", "maximum-strength-of-k-disjoint-subarrays"]}, {"contest_title": "\u7b2c 389 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 389", "contest_title_slug": "weekly-contest-389", "contest_id": 1006, "contest_start_time": 1710642600, "contest_duration": 5400, "user_num": 4561, "question_slugs": ["existence-of-a-substring-in-a-string-and-its-reverse", "count-substrings-starting-and-ending-with-given-character", "minimum-deletions-to-make-string-k-special", "minimum-moves-to-pick-k-ones"]}, {"contest_title": "\u7b2c 390 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 390", "contest_title_slug": "weekly-contest-390", "contest_id": 1011, "contest_start_time": 1711247400, "contest_duration": 5400, "user_num": 4817, "question_slugs": ["maximum-length-substring-with-two-occurrences", "apply-operations-to-make-sum-of-array-greater-than-or-equal-to-k", "most-frequent-ids", "longest-common-suffix-queries"]}, {"contest_title": "\u7b2c 391 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 391", "contest_title_slug": "weekly-contest-391", "contest_id": 1014, "contest_start_time": 1711852200, "contest_duration": 5400, "user_num": 4180, "question_slugs": ["harshad-number", "water-bottles-ii", "count-alternating-subarrays", "minimize-manhattan-distances"]}, {"contest_title": "\u7b2c 392 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 392", "contest_title_slug": "weekly-contest-392", "contest_id": 1018, "contest_start_time": 1712457000, "contest_duration": 5400, "user_num": 3193, "question_slugs": ["longest-strictly-increasing-or-strictly-decreasing-subarray", "lexicographically-smallest-string-after-operations-with-constraint", "minimum-operations-to-make-median-of-array-equal-to-k", "minimum-cost-walk-in-weighted-graph"]}, {"contest_title": "\u7b2c 393 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 393", "contest_title_slug": "weekly-contest-393", "contest_id": 1020, "contest_start_time": 1713061800, "contest_duration": 5400, "user_num": 4218, "question_slugs": ["latest-time-you-can-obtain-after-replacing-characters", "maximum-prime-difference", "kth-smallest-amount-with-single-denomination-combination", "minimum-sum-of-values-by-dividing-array"]}, {"contest_title": "\u7b2c 394 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 394", "contest_title_slug": "weekly-contest-394", "contest_id": 1024, "contest_start_time": 1713666600, "contest_duration": 5400, "user_num": 3957, "question_slugs": ["count-the-number-of-special-characters-i", "count-the-number-of-special-characters-ii", "minimum-number-of-operations-to-satisfy-conditions", "find-edges-in-shortest-paths"]}, {"contest_title": "\u7b2c 395 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 395", "contest_title_slug": "weekly-contest-395", "contest_id": 1026, "contest_start_time": 1714271400, "contest_duration": 5400, "user_num": 2968, "question_slugs": ["find-the-integer-added-to-array-i", "find-the-integer-added-to-array-ii", "minimum-array-end", "find-the-median-of-the-uniqueness-array"]}, {"contest_title": "\u7b2c 396 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 396", "contest_title_slug": "weekly-contest-396", "contest_id": 1030, "contest_start_time": 1714876200, "contest_duration": 5400, "user_num": 2931, "question_slugs": ["valid-word", "minimum-number-of-operations-to-make-word-k-periodic", "minimum-length-of-anagram-concatenation", "minimum-cost-to-equalize-array"]}, {"contest_title": "\u7b2c 397 \u573a\u5468\u8d5b", "contest_title_en": "Weekly Contest 397", "contest_title_slug": "weekly-contest-397", "contest_id": 1032, "contest_start_time": 1715481000, "contest_duration": 5400, "user_num": 3365, "question_slugs": ["permutation-difference-between-two-strings", "taking-maximum-energy-from-the-mystic-dungeon", "maximum-difference-score-in-a-grid", "find-the-minimum-cost-array-permutation"]}, {"contest_title": "\u7b2c 1 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 1", "contest_title_slug": "biweekly-contest-1", "contest_id": 70, "contest_start_time": 1559399400, "contest_duration": 7200, "user_num": 197, "question_slugs": ["fixed-point", "index-pairs-of-a-string", "campus-bikes-ii", "digit-count-in-range"]}, {"contest_title": "\u7b2c 2 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 2", "contest_title_slug": "biweekly-contest-2", "contest_id": 73, "contest_start_time": 1560609000, "contest_duration": 5400, "user_num": 256, "question_slugs": ["sum-of-digits-in-the-minimum-number", "high-five", "brace-expansion", "confusing-number-ii"]}, {"contest_title": "\u7b2c 3 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 3", "contest_title_slug": "biweekly-contest-3", "contest_id": 85, "contest_start_time": 1561818600, "contest_duration": 5400, 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\u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 6", "contest_title_slug": "biweekly-contest-6", "contest_id": 95, "contest_start_time": 1565447400, "contest_duration": 5400, "user_num": 513, "question_slugs": ["check-if-a-number-is-majority-element-in-a-sorted-array", "minimum-swaps-to-group-all-1s-together", "analyze-user-website-visit-pattern", "string-transforms-into-another-string"]}, {"contest_title": "\u7b2c 7 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 7", "contest_title_slug": "biweekly-contest-7", "contest_id": 99, "contest_start_time": 1566657000, "contest_duration": 5400, "user_num": 561, "question_slugs": ["single-row-keyboard", "design-file-system", "minimum-cost-to-connect-sticks", "optimize-water-distribution-in-a-village"]}, {"contest_title": "\u7b2c 8 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 8", "contest_title_slug": "biweekly-contest-8", "contest_id": 103, "contest_start_time": 1567866600, "contest_duration": 5400, "user_num": 630, "question_slugs": ["count-substrings-with-only-one-distinct-letter", "before-and-after-puzzle", "shortest-distance-to-target-color", "maximum-number-of-ones"]}, {"contest_title": "\u7b2c 9 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 9", "contest_title_slug": "biweekly-contest-9", "contest_id": 108, "contest_start_time": 1569076200, "contest_duration": 5700, "user_num": 929, "question_slugs": ["how-many-apples-can-you-put-into-the-basket", "minimum-knight-moves", "find-smallest-common-element-in-all-rows", "minimum-time-to-build-blocks"]}, {"contest_title": "\u7b2c 10 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 10", "contest_title_slug": "biweekly-contest-10", "contest_id": 115, "contest_start_time": 1570285800, "contest_duration": 5400, "user_num": 738, "question_slugs": ["intersection-of-three-sorted-arrays", "two-sum-bsts", "stepping-numbers", "valid-palindrome-iii"]}, {"contest_title": "\u7b2c 11 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 11", "contest_title_slug": "biweekly-contest-11", "contest_id": 118, "contest_start_time": 1571495400, "contest_duration": 5400, "user_num": 913, "question_slugs": ["missing-number-in-arithmetic-progression", "meeting-scheduler", "toss-strange-coins", "divide-chocolate"]}, {"contest_title": "\u7b2c 12 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 12", "contest_title_slug": "biweekly-contest-12", "contest_id": 121, "contest_start_time": 1572705000, "contest_duration": 5400, "user_num": 911, "question_slugs": ["design-a-leaderboard", "array-transformation", "tree-diameter", "palindrome-removal"]}, {"contest_title": "\u7b2c 13 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 13", "contest_title_slug": "biweekly-contest-13", "contest_id": 124, "contest_start_time": 1573914600, "contest_duration": 5400, "user_num": 810, "question_slugs": ["encode-number", "smallest-common-region", "synonymous-sentences", "handshakes-that-dont-cross"]}, {"contest_title": "\u7b2c 14 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 14", "contest_title_slug": "biweekly-contest-14", "contest_id": 129, "contest_start_time": 1575124200, "contest_duration": 5400, "user_num": 871, "question_slugs": ["hexspeak", "remove-interval", "delete-tree-nodes", "number-of-ships-in-a-rectangle"]}, {"contest_title": "\u7b2c 15 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 15", "contest_title_slug": "biweekly-contest-15", "contest_id": 132, "contest_start_time": 1576333800, "contest_duration": 5400, "user_num": 797, "question_slugs": ["element-appearing-more-than-25-in-sorted-array", "remove-covered-intervals", "iterator-for-combination", "minimum-falling-path-sum-ii"]}, {"contest_title": "\u7b2c 16 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 16", "contest_title_slug": "biweekly-contest-16", "contest_id": 135, "contest_start_time": 1577543400, "contest_duration": 5400, "user_num": 822, "question_slugs": ["replace-elements-with-greatest-element-on-right-side", "sum-of-mutated-array-closest-to-target", "deepest-leaves-sum", "number-of-paths-with-max-score"]}, {"contest_title": "\u7b2c 17 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 17", "contest_title_slug": "biweekly-contest-17", "contest_id": 138, "contest_start_time": 1578753000, "contest_duration": 5400, "user_num": 897, "question_slugs": ["decompress-run-length-encoded-list", "matrix-block-sum", "sum-of-nodes-with-even-valued-grandparent", "distinct-echo-substrings"]}, {"contest_title": "\u7b2c 18 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 18", "contest_title_slug": "biweekly-contest-18", "contest_id": 143, "contest_start_time": 1579962600, "contest_duration": 5400, "user_num": 587, "question_slugs": ["rank-transform-of-an-array", "break-a-palindrome", "sort-the-matrix-diagonally", "reverse-subarray-to-maximize-array-value"]}, {"contest_title": "\u7b2c 19 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 19", "contest_title_slug": "biweekly-contest-19", "contest_id": 146, "contest_start_time": 1581172200, "contest_duration": 5400, "user_num": 1120, "question_slugs": ["number-of-steps-to-reduce-a-number-to-zero", "number-of-sub-arrays-of-size-k-and-average-greater-than-or-equal-to-threshold", "angle-between-hands-of-a-clock", "jump-game-iv"]}, {"contest_title": "\u7b2c 20 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 20", "contest_title_slug": "biweekly-contest-20", "contest_id": 149, "contest_start_time": 1582381800, "contest_duration": 5400, "user_num": 1541, "question_slugs": ["sort-integers-by-the-number-of-1-bits", "apply-discount-every-n-orders", "number-of-substrings-containing-all-three-characters", "count-all-valid-pickup-and-delivery-options"]}, {"contest_title": "\u7b2c 21 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 21", "contest_title_slug": "biweekly-contest-21", "contest_id": 157, "contest_start_time": 1583591400, "contest_duration": 5400, "user_num": 1913, "question_slugs": ["increasing-decreasing-string", "find-the-longest-substring-containing-vowels-in-even-counts", "longest-zigzag-path-in-a-binary-tree", "maximum-sum-bst-in-binary-tree"]}, {"contest_title": "\u7b2c 22 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 22", "contest_title_slug": "biweekly-contest-22", "contest_id": 163, "contest_start_time": 1584801000, "contest_duration": 5400, "user_num": 2042, "question_slugs": ["find-the-distance-value-between-two-arrays", "cinema-seat-allocation", "sort-integers-by-the-power-value", "pizza-with-3n-slices"]}, {"contest_title": "\u7b2c 23 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 23", "contest_title_slug": "biweekly-contest-23", "contest_id": 169, "contest_start_time": 1586010600, "contest_duration": 5400, "user_num": 2045, "question_slugs": ["count-largest-group", "construct-k-palindrome-strings", "circle-and-rectangle-overlapping", "reducing-dishes"]}, {"contest_title": "\u7b2c 24 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 24", "contest_title_slug": "biweekly-contest-24", "contest_id": 178, "contest_start_time": 1587220200, "contest_duration": 5400, "user_num": 1898, "question_slugs": ["minimum-value-to-get-positive-step-by-step-sum", "find-the-minimum-number-of-fibonacci-numbers-whose-sum-is-k", "the-k-th-lexicographical-string-of-all-happy-strings-of-length-n", "restore-the-array"]}, {"contest_title": "\u7b2c 25 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 25", "contest_title_slug": "biweekly-contest-25", "contest_id": 192, "contest_start_time": 1588429800, "contest_duration": 5400, "user_num": 1832, "question_slugs": ["kids-with-the-greatest-number-of-candies", "max-difference-you-can-get-from-changing-an-integer", "check-if-a-string-can-break-another-string", "number-of-ways-to-wear-different-hats-to-each-other"]}, {"contest_title": "\u7b2c 26 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 26", "contest_title_slug": "biweekly-contest-26", "contest_id": 198, "contest_start_time": 1589639400, "contest_duration": 5400, "user_num": 1971, "question_slugs": ["consecutive-characters", "simplified-fractions", "count-good-nodes-in-binary-tree", "form-largest-integer-with-digits-that-add-up-to-target"]}, {"contest_title": "\u7b2c 27 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 27", "contest_title_slug": "biweekly-contest-27", "contest_id": 204, "contest_start_time": 1590849000, "contest_duration": 5400, "user_num": 1966, "question_slugs": ["make-two-arrays-equal-by-reversing-subarrays", "check-if-a-string-contains-all-binary-codes-of-size-k", "course-schedule-iv", "cherry-pickup-ii"]}, {"contest_title": "\u7b2c 28 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 28", "contest_title_slug": "biweekly-contest-28", "contest_id": 210, "contest_start_time": 1592058600, "contest_duration": 5400, "user_num": 2144, "question_slugs": ["final-prices-with-a-special-discount-in-a-shop", "subrectangle-queries", "find-two-non-overlapping-sub-arrays-each-with-target-sum", "allocate-mailboxes"]}, {"contest_title": "\u7b2c 29 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 29", "contest_title_slug": "biweekly-contest-29", "contest_id": 216, "contest_start_time": 1593268200, "contest_duration": 5400, "user_num": 2260, "question_slugs": ["average-salary-excluding-the-minimum-and-maximum-salary", "the-kth-factor-of-n", "longest-subarray-of-1s-after-deleting-one-element", "parallel-courses-ii"]}, {"contest_title": "\u7b2c 30 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 30", "contest_title_slug": "biweekly-contest-30", "contest_id": 222, "contest_start_time": 1594477800, "contest_duration": 5400, "user_num": 2545, "question_slugs": ["reformat-date", "range-sum-of-sorted-subarray-sums", "minimum-difference-between-largest-and-smallest-value-in-three-moves", "stone-game-iv"]}, {"contest_title": "\u7b2c 31 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 31", "contest_title_slug": "biweekly-contest-31", "contest_id": 232, "contest_start_time": 1595687400, "contest_duration": 5400, "user_num": 2767, "question_slugs": ["count-odd-numbers-in-an-interval-range", "number-of-sub-arrays-with-odd-sum", "number-of-good-ways-to-split-a-string", "minimum-number-of-increments-on-subarrays-to-form-a-target-array"]}, {"contest_title": "\u7b2c 32 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 32", "contest_title_slug": "biweekly-contest-32", "contest_id": 237, "contest_start_time": 1596897000, "contest_duration": 5400, "user_num": 2957, "question_slugs": ["kth-missing-positive-number", "can-convert-string-in-k-moves", "minimum-insertions-to-balance-a-parentheses-string", "find-longest-awesome-substring"]}, {"contest_title": "\u7b2c 33 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 33", "contest_title_slug": "biweekly-contest-33", "contest_id": 241, "contest_start_time": 1598106600, "contest_duration": 5400, "user_num": 3304, "question_slugs": ["thousand-separator", "minimum-number-of-vertices-to-reach-all-nodes", "minimum-numbers-of-function-calls-to-make-target-array", "detect-cycles-in-2d-grid"]}, {"contest_title": "\u7b2c 34 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 34", "contest_title_slug": "biweekly-contest-34", "contest_id": 256, "contest_start_time": 1599316200, "contest_duration": 5400, "user_num": 2842, "question_slugs": ["matrix-diagonal-sum", "number-of-ways-to-split-a-string", "shortest-subarray-to-be-removed-to-make-array-sorted", "count-all-possible-routes"]}, {"contest_title": "\u7b2c 35 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 35", "contest_title_slug": "biweekly-contest-35", "contest_id": 266, "contest_start_time": 1600525800, "contest_duration": 5400, "user_num": 2839, "question_slugs": ["sum-of-all-odd-length-subarrays", "maximum-sum-obtained-of-any-permutation", "make-sum-divisible-by-p", "strange-printer-ii"]}, {"contest_title": "\u7b2c 36 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 36", "contest_title_slug": "biweekly-contest-36", "contest_id": 288, "contest_start_time": 1601735400, "contest_duration": 5400, "user_num": 2204, "question_slugs": ["design-parking-system", "alert-using-same-key-card-three-or-more-times-in-a-one-hour-period", "find-valid-matrix-given-row-and-column-sums", "find-servers-that-handled-most-number-of-requests"]}, {"contest_title": "\u7b2c 37 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 37", "contest_title_slug": "biweekly-contest-37", "contest_id": 294, "contest_start_time": 1602945000, "contest_duration": 5400, "user_num": 2104, "question_slugs": ["mean-of-array-after-removing-some-elements", "coordinate-with-maximum-network-quality", "number-of-sets-of-k-non-overlapping-line-segments", "fancy-sequence"]}, {"contest_title": "\u7b2c 38 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 38", "contest_title_slug": "biweekly-contest-38", "contest_id": 300, "contest_start_time": 1604154600, "contest_duration": 5400, "user_num": 2004, "question_slugs": ["sort-array-by-increasing-frequency", "widest-vertical-area-between-two-points-containing-no-points", "count-substrings-that-differ-by-one-character", "number-of-ways-to-form-a-target-string-given-a-dictionary"]}, {"contest_title": "\u7b2c 39 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 39", "contest_title_slug": "biweekly-contest-39", "contest_id": 306, "contest_start_time": 1605364200, "contest_duration": 5400, "user_num": 2069, "question_slugs": ["defuse-the-bomb", "minimum-deletions-to-make-string-balanced", "minimum-jumps-to-reach-home", "distribute-repeating-integers"]}, {"contest_title": "\u7b2c 40 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 40", "contest_title_slug": "biweekly-contest-40", "contest_id": 312, "contest_start_time": 1606573800, "contest_duration": 5400, "user_num": 1891, "question_slugs": ["maximum-repeating-substring", "merge-in-between-linked-lists", "design-front-middle-back-queue", "minimum-number-of-removals-to-make-mountain-array"]}, {"contest_title": "\u7b2c 41 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 41", "contest_title_slug": "biweekly-contest-41", "contest_id": 318, "contest_start_time": 1607783400, "contest_duration": 5400, "user_num": 1660, "question_slugs": ["count-the-number-of-consistent-strings", "sum-of-absolute-differences-in-a-sorted-array", "stone-game-vi", "delivering-boxes-from-storage-to-ports"]}, {"contest_title": "\u7b2c 42 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 42", "contest_title_slug": "biweekly-contest-42", "contest_id": 325, "contest_start_time": 1608993000, "contest_duration": 5400, "user_num": 1578, "question_slugs": ["number-of-students-unable-to-eat-lunch", "average-waiting-time", "maximum-binary-string-after-change", "minimum-adjacent-swaps-for-k-consecutive-ones"]}, {"contest_title": "\u7b2c 43 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 43", "contest_title_slug": "biweekly-contest-43", "contest_id": 331, "contest_start_time": 1610202600, "contest_duration": 5400, "user_num": 1631, "question_slugs": ["calculate-money-in-leetcode-bank", "maximum-score-from-removing-substrings", "construct-the-lexicographically-largest-valid-sequence", "number-of-ways-to-reconstruct-a-tree"]}, {"contest_title": "\u7b2c 44 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 44", "contest_title_slug": "biweekly-contest-44", "contest_id": 337, "contest_start_time": 1611412200, "contest_duration": 5400, "user_num": 1826, "question_slugs": ["find-the-highest-altitude", "minimum-number-of-people-to-teach", "decode-xored-permutation", "count-ways-to-make-array-with-product"]}, {"contest_title": "\u7b2c 45 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 45", "contest_title_slug": "biweekly-contest-45", "contest_id": 343, "contest_start_time": 1612621800, "contest_duration": 5400, "user_num": 1676, "question_slugs": ["sum-of-unique-elements", "maximum-absolute-sum-of-any-subarray", "minimum-length-of-string-after-deleting-similar-ends", "maximum-number-of-events-that-can-be-attended-ii"]}, {"contest_title": "\u7b2c 46 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 46", "contest_title_slug": "biweekly-contest-46", "contest_id": 349, "contest_start_time": 1613831400, "contest_duration": 5400, "user_num": 1647, "question_slugs": ["longest-nice-substring", "form-array-by-concatenating-subarrays-of-another-array", "map-of-highest-peak", "tree-of-coprimes"]}, {"contest_title": "\u7b2c 47 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 47", "contest_title_slug": "biweekly-contest-47", "contest_id": 355, "contest_start_time": 1615041000, "contest_duration": 5400, "user_num": 3085, "question_slugs": ["find-nearest-point-that-has-the-same-x-or-y-coordinate", "check-if-number-is-a-sum-of-powers-of-three", "sum-of-beauty-of-all-substrings", "count-pairs-of-nodes"]}, {"contest_title": "\u7b2c 48 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 48", "contest_title_slug": "biweekly-contest-48", "contest_id": 362, "contest_start_time": 1616250600, "contest_duration": 5400, "user_num": 2853, "question_slugs": ["second-largest-digit-in-a-string", "design-authentication-manager", "maximum-number-of-consecutive-values-you-can-make", "maximize-score-after-n-operations"]}, {"contest_title": "\u7b2c 49 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 49", "contest_title_slug": "biweekly-contest-49", "contest_id": 374, "contest_start_time": 1617460200, "contest_duration": 5400, "user_num": 3193, "question_slugs": ["determine-color-of-a-chessboard-square", "sentence-similarity-iii", "count-nice-pairs-in-an-array", "maximum-number-of-groups-getting-fresh-donuts"]}, {"contest_title": "\u7b2c 50 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 50", "contest_title_slug": "biweekly-contest-50", "contest_id": 390, "contest_start_time": 1618669800, "contest_duration": 5400, "user_num": 3608, "question_slugs": ["minimum-operations-to-make-the-array-increasing", "queries-on-number-of-points-inside-a-circle", "maximum-xor-for-each-query", "minimum-number-of-operations-to-make-string-sorted"]}, {"contest_title": "\u7b2c 51 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 51", "contest_title_slug": "biweekly-contest-51", "contest_id": 396, "contest_start_time": 1619879400, "contest_duration": 5400, "user_num": 2675, "question_slugs": ["replace-all-digits-with-characters", "seat-reservation-manager", "maximum-element-after-decreasing-and-rearranging", "closest-room"]}, {"contest_title": "\u7b2c 52 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 52", "contest_title_slug": "biweekly-contest-52", "contest_id": 402, "contest_start_time": 1621089000, "contest_duration": 5400, "user_num": 2930, "question_slugs": ["sorting-the-sentence", "incremental-memory-leak", "rotating-the-box", "sum-of-floored-pairs"]}, {"contest_title": "\u7b2c 53 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 53", "contest_title_slug": "biweekly-contest-53", "contest_id": 408, "contest_start_time": 1622298600, "contest_duration": 5400, "user_num": 3069, "question_slugs": ["substrings-of-size-three-with-distinct-characters", "minimize-maximum-pair-sum-in-array", "get-biggest-three-rhombus-sums-in-a-grid", "minimum-xor-sum-of-two-arrays"]}, {"contest_title": "\u7b2c 54 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 54", "contest_title_slug": "biweekly-contest-54", "contest_id": 414, "contest_start_time": 1623508200, "contest_duration": 5400, "user_num": 2479, "question_slugs": ["check-if-all-the-integers-in-a-range-are-covered", "find-the-student-that-will-replace-the-chalk", "largest-magic-square", "minimum-cost-to-change-the-final-value-of-expression"]}, {"contest_title": "\u7b2c 55 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 55", "contest_title_slug": "biweekly-contest-55", "contest_id": 421, "contest_start_time": 1624717800, "contest_duration": 5400, "user_num": 3277, "question_slugs": ["remove-one-element-to-make-the-array-strictly-increasing", "remove-all-occurrences-of-a-substring", "maximum-alternating-subsequence-sum", "design-movie-rental-system"]}, {"contest_title": "\u7b2c 56 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 56", "contest_title_slug": "biweekly-contest-56", "contest_id": 429, "contest_start_time": 1625927400, "contest_duration": 5400, "user_num": 2760, "question_slugs": ["count-square-sum-triples", "nearest-exit-from-entrance-in-maze", "sum-game", "minimum-cost-to-reach-destination-in-time"]}, {"contest_title": "\u7b2c 57 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 57", "contest_title_slug": "biweekly-contest-57", "contest_id": 435, "contest_start_time": 1627137000, "contest_duration": 5400, "user_num": 2933, "question_slugs": ["check-if-all-characters-have-equal-number-of-occurrences", "the-number-of-the-smallest-unoccupied-chair", "describe-the-painting", "number-of-visible-people-in-a-queue"]}, {"contest_title": "\u7b2c 58 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 58", "contest_title_slug": "biweekly-contest-58", "contest_id": 441, "contest_start_time": 1628346600, "contest_duration": 5400, "user_num": 2889, "question_slugs": ["delete-characters-to-make-fancy-string", "check-if-move-is-legal", "minimum-total-space-wasted-with-k-resizing-operations", "maximum-product-of-the-length-of-two-palindromic-substrings"]}, {"contest_title": "\u7b2c 59 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 59", "contest_title_slug": "biweekly-contest-59", "contest_id": 448, "contest_start_time": 1629556200, "contest_duration": 5400, "user_num": 3030, "question_slugs": ["minimum-time-to-type-word-using-special-typewriter", "maximum-matrix-sum", "number-of-ways-to-arrive-at-destination", "number-of-ways-to-separate-numbers"]}, {"contest_title": "\u7b2c 60 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 60", "contest_title_slug": "biweekly-contest-60", "contest_id": 461, "contest_start_time": 1630765800, "contest_duration": 5400, "user_num": 2848, "question_slugs": ["find-the-middle-index-in-array", "find-all-groups-of-farmland", "operations-on-tree", "the-number-of-good-subsets"]}, {"contest_title": "\u7b2c 61 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 61", "contest_title_slug": "biweekly-contest-61", "contest_id": 467, "contest_start_time": 1631975400, "contest_duration": 5400, "user_num": 2534, "question_slugs": ["count-number-of-pairs-with-absolute-difference-k", "find-original-array-from-doubled-array", "maximum-earnings-from-taxi", "minimum-number-of-operations-to-make-array-continuous"]}, {"contest_title": "\u7b2c 62 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 62", "contest_title_slug": "biweekly-contest-62", "contest_id": 477, "contest_start_time": 1633185000, "contest_duration": 5400, "user_num": 2619, "question_slugs": ["convert-1d-array-into-2d-array", "number-of-pairs-of-strings-with-concatenation-equal-to-target", "maximize-the-confusion-of-an-exam", "maximum-number-of-ways-to-partition-an-array"]}, {"contest_title": "\u7b2c 63 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 63", "contest_title_slug": "biweekly-contest-63", "contest_id": 484, "contest_start_time": 1634394600, "contest_duration": 5400, "user_num": 2828, "question_slugs": ["minimum-number-of-moves-to-seat-everyone", "remove-colored-pieces-if-both-neighbors-are-the-same-color", "the-time-when-the-network-becomes-idle", "kth-smallest-product-of-two-sorted-arrays"]}, {"contest_title": "\u7b2c 64 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 64", "contest_title_slug": "biweekly-contest-64", "contest_id": 490, "contest_start_time": 1635604200, "contest_duration": 5400, "user_num": 2838, "question_slugs": ["kth-distinct-string-in-an-array", "two-best-non-overlapping-events", "plates-between-candles", "number-of-valid-move-combinations-on-chessboard"]}, {"contest_title": "\u7b2c 65 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 65", "contest_title_slug": "biweekly-contest-65", "contest_id": 497, "contest_start_time": 1636813800, "contest_duration": 5400, "user_num": 2676, "question_slugs": ["check-whether-two-strings-are-almost-equivalent", "walking-robot-simulation-ii", "most-beautiful-item-for-each-query", "maximum-number-of-tasks-you-can-assign"]}, {"contest_title": "\u7b2c 66 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 66", "contest_title_slug": "biweekly-contest-66", "contest_id": 503, "contest_start_time": 1638023400, "contest_duration": 5400, "user_num": 2803, "question_slugs": ["count-common-words-with-one-occurrence", "minimum-number-of-food-buckets-to-feed-the-hamsters", "minimum-cost-homecoming-of-a-robot-in-a-grid", "count-fertile-pyramids-in-a-land"]}, {"contest_title": "\u7b2c 67 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 67", "contest_title_slug": "biweekly-contest-67", "contest_id": 509, "contest_start_time": 1639233000, "contest_duration": 5400, "user_num": 2923, "question_slugs": ["find-subsequence-of-length-k-with-the-largest-sum", "find-good-days-to-rob-the-bank", "detonate-the-maximum-bombs", "sequentially-ordinal-rank-tracker"]}, {"contest_title": "\u7b2c 68 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 68", "contest_title_slug": "biweekly-contest-68", "contest_id": 515, "contest_start_time": 1640442600, "contest_duration": 5400, "user_num": 2854, "question_slugs": ["maximum-number-of-words-found-in-sentences", "find-all-possible-recipes-from-given-supplies", "check-if-a-parentheses-string-can-be-valid", "abbreviating-the-product-of-a-range"]}, {"contest_title": "\u7b2c 69 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 69", "contest_title_slug": "biweekly-contest-69", "contest_id": 521, "contest_start_time": 1641652200, "contest_duration": 5400, "user_num": 3360, "question_slugs": ["capitalize-the-title", "maximum-twin-sum-of-a-linked-list", "longest-palindrome-by-concatenating-two-letter-words", "stamping-the-grid"]}, {"contest_title": "\u7b2c 70 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 70", "contest_title_slug": "biweekly-contest-70", "contest_id": 527, "contest_start_time": 1642861800, "contest_duration": 5400, "user_num": 3640, "question_slugs": ["minimum-cost-of-buying-candies-with-discount", "count-the-hidden-sequences", "k-highest-ranked-items-within-a-price-range", "number-of-ways-to-divide-a-long-corridor"]}, {"contest_title": "\u7b2c 71 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 71", "contest_title_slug": "biweekly-contest-71", "contest_id": 533, "contest_start_time": 1644071400, "contest_duration": 5400, "user_num": 3028, "question_slugs": ["minimum-sum-of-four-digit-number-after-splitting-digits", "partition-array-according-to-given-pivot", "minimum-cost-to-set-cooking-time", "minimum-difference-in-sums-after-removal-of-elements"]}, {"contest_title": "\u7b2c 72 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 72", "contest_title_slug": "biweekly-contest-72", "contest_id": 539, "contest_start_time": 1645281000, "contest_duration": 5400, "user_num": 4400, "question_slugs": ["count-equal-and-divisible-pairs-in-an-array", "find-three-consecutive-integers-that-sum-to-a-given-number", "maximum-split-of-positive-even-integers", "count-good-triplets-in-an-array"]}, {"contest_title": "\u7b2c 73 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 73", "contest_title_slug": "biweekly-contest-73", "contest_id": 545, "contest_start_time": 1646490600, "contest_duration": 5400, "user_num": 5132, "question_slugs": ["most-frequent-number-following-key-in-an-array", "sort-the-jumbled-numbers", "all-ancestors-of-a-node-in-a-directed-acyclic-graph", "minimum-number-of-moves-to-make-palindrome"]}, {"contest_title": "\u7b2c 74 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 74", "contest_title_slug": "biweekly-contest-74", "contest_id": 554, "contest_start_time": 1647700200, "contest_duration": 5400, "user_num": 5442, "question_slugs": ["divide-array-into-equal-pairs", "maximize-number-of-subsequences-in-a-string", "minimum-operations-to-halve-array-sum", "minimum-white-tiles-after-covering-with-carpets"]}, {"contest_title": "\u7b2c 75 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"user_num": 4211, "question_slugs": ["count-prefixes-of-a-given-string", "minimum-average-difference", "count-unguarded-cells-in-the-grid", "escape-the-spreading-fire"]}, {"contest_title": "\u7b2c 78 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 78", "contest_title_slug": "biweekly-contest-78", "contest_id": 590, "contest_start_time": 1652538600, "contest_duration": 5400, "user_num": 4347, "question_slugs": ["find-the-k-beauty-of-a-number", "number-of-ways-to-split-array", "maximum-white-tiles-covered-by-a-carpet", "substring-with-largest-variance"]}, {"contest_title": "\u7b2c 79 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 79", "contest_title_slug": "biweekly-contest-79", "contest_id": 598, "contest_start_time": 1653748200, "contest_duration": 5400, "user_num": 4250, "question_slugs": ["check-if-number-has-equal-digit-count-and-digit-value", "sender-with-largest-word-count", "maximum-total-importance-of-roads", "booking-concert-tickets-in-groups"]}, {"contest_title": "\u7b2c 80 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 80", "contest_title_slug": "biweekly-contest-80", "contest_id": 608, "contest_start_time": 1654957800, "contest_duration": 5400, "user_num": 3949, "question_slugs": ["strong-password-checker-ii", "successful-pairs-of-spells-and-potions", "match-substring-after-replacement", "count-subarrays-with-score-less-than-k"]}, {"contest_title": "\u7b2c 81 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 81", "contest_title_slug": "biweekly-contest-81", "contest_id": 614, "contest_start_time": 1656167400, "contest_duration": 5400, "user_num": 3847, "question_slugs": ["count-asterisks", "count-unreachable-pairs-of-nodes-in-an-undirected-graph", "maximum-xor-after-operations", "number-of-distinct-roll-sequences"]}, {"contest_title": "\u7b2c 82 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 82", "contest_title_slug": "biweekly-contest-82", "contest_id": 646, "contest_start_time": 1657377000, "contest_duration": 5400, "user_num": 4144, "question_slugs": ["evaluate-boolean-binary-tree", "the-latest-time-to-catch-a-bus", "minimum-sum-of-squared-difference", "subarray-with-elements-greater-than-varying-threshold"]}, {"contest_title": "\u7b2c 83 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 83", "contest_title_slug": "biweekly-contest-83", "contest_id": 652, "contest_start_time": 1658586600, "contest_duration": 5400, "user_num": 4437, "question_slugs": ["best-poker-hand", "number-of-zero-filled-subarrays", "design-a-number-container-system", "shortest-impossible-sequence-of-rolls"]}, {"contest_title": "\u7b2c 84 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 84", "contest_title_slug": "biweekly-contest-84", "contest_id": 658, "contest_start_time": 1659796200, "contest_duration": 5400, "user_num": 4574, "question_slugs": ["merge-similar-items", 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"contest_duration": 5400, "user_num": 2547, "question_slugs": ["divide-an-array-into-subarrays-with-minimum-cost-i", "find-if-array-can-be-sorted", "minimize-length-of-array-using-operations", "divide-an-array-into-subarrays-with-minimum-cost-ii"]}, {"contest_title": "\u7b2c 123 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 123", "contest_title_slug": "biweekly-contest-123", "contest_id": 985, "contest_start_time": 1706970600, "contest_duration": 5400, "user_num": 2209, "question_slugs": ["type-of-triangle", "find-the-number-of-ways-to-place-people-i", "maximum-good-subarray-sum", "find-the-number-of-ways-to-place-people-ii"]}, {"contest_title": "\u7b2c 124 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 124", "contest_title_slug": "biweekly-contest-124", "contest_id": 991, "contest_start_time": 1708180200, "contest_duration": 5400, "user_num": 1861, "question_slugs": ["maximum-number-of-operations-with-the-same-score-i", "apply-operations-to-make-string-empty", "maximum-number-of-operations-with-the-same-score-ii", "maximize-consecutive-elements-in-an-array-after-modification"]}, {"contest_title": "\u7b2c 125 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 125", "contest_title_slug": "biweekly-contest-125", "contest_id": 997, "contest_start_time": 1709389800, "contest_duration": 5400, "user_num": 2599, "question_slugs": ["minimum-operations-to-exceed-threshold-value-i", "minimum-operations-to-exceed-threshold-value-ii", "count-pairs-of-connectable-servers-in-a-weighted-tree-network", "find-the-maximum-sum-of-node-values"]}, {"contest_title": "\u7b2c 126 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 126", "contest_title_slug": "biweekly-contest-126", "contest_id": 1003, "contest_start_time": 1710599400, "contest_duration": 5400, "user_num": 3234, "question_slugs": ["find-the-sum-of-encrypted-integers", "mark-elements-on-array-by-performing-queries", "replace-question-marks-in-string-to-minimize-its-value", "find-the-sum-of-the-power-of-all-subsequences"]}, {"contest_title": "\u7b2c 127 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 127", "contest_title_slug": "biweekly-contest-127", "contest_id": 1010, "contest_start_time": 1711809000, "contest_duration": 5400, "user_num": 2950, "question_slugs": ["shortest-subarray-with-or-at-least-k-i", "minimum-levels-to-gain-more-points", "shortest-subarray-with-or-at-least-k-ii", "find-the-sum-of-subsequence-powers"]}, {"contest_title": "\u7b2c 128 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 128", "contest_title_slug": "biweekly-contest-128", "contest_id": 1017, "contest_start_time": 1713018600, "contest_duration": 5400, "user_num": 2653, "question_slugs": ["score-of-a-string", "minimum-rectangles-to-cover-points", "minimum-time-to-visit-disappearing-nodes", "find-the-number-of-subarrays-where-boundary-elements-are-maximum"]}, {"contest_title": "\u7b2c 129 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 129", "contest_title_slug": "biweekly-contest-129", "contest_id": 1023, "contest_start_time": 1714228200, "contest_duration": 5400, "user_num": 2510, "question_slugs": ["make-a-square-with-the-same-color", "right-triangles", "find-all-possible-stable-binary-arrays-i", "find-all-possible-stable-binary-arrays-ii"]}, {"contest_title": "\u7b2c 130 \u573a\u53cc\u5468\u8d5b", "contest_title_en": "Biweekly Contest 130", "contest_title_slug": "biweekly-contest-130", "contest_id": 1029, "contest_start_time": 1715437800, "contest_duration": 5400, "user_num": 2604, "question_slugs": ["check-if-grid-satisfies-conditions", "maximum-points-inside-the-square", "minimum-substring-partition-of-equal-character-frequency", "find-products-of-elements-of-big-array"]}]
\ No newline at end of file

From bb01264483d319be645a1a8546f5544209cf09b1 Mon Sep 17 00:00:00 2001
From: Lanre Adedara <lanre.adedara@shara.co>
Date: Mon, 13 May 2024 08:15:05 +0100
Subject: [PATCH 05/12] feat: add swift implementation to lcci problem:
 No.17.16 (#2803)

---
 lcci/17.16.The Masseuse/README.md      | 18 ++++++++++++++++++
 lcci/17.16.The Masseuse/README_EN.md   | 18 ++++++++++++++++++
 lcci/17.16.The Masseuse/Solution.swift | 15 +++++++++++++++
 3 files changed, 51 insertions(+)
 create mode 100644 lcci/17.16.The Masseuse/Solution.swift

diff --git a/lcci/17.16.The Masseuse/README.md b/lcci/17.16.The Masseuse/README.md
index 196dd65e92c46..2ac6e20444ef1 100644
--- a/lcci/17.16.The Masseuse/README.md	
+++ b/lcci/17.16.The Masseuse/README.md	
@@ -119,6 +119,24 @@ function massage(nums: number[]): number {
 }
 ```
 
+```swift
+class Solution {
+    func massage(_ nums: [Int]) -> Int {
+        var f = 0
+        var g = 0
+        
+        for x in nums {
+            let ff = g + x
+            let gg = max(f, g)
+            f = ff
+            g = gg
+        }
+        
+        return max(f, g)
+    }
+}
+```
+
 <!-- tabs:end -->
 
 <!-- end -->
diff --git a/lcci/17.16.The Masseuse/README_EN.md b/lcci/17.16.The Masseuse/README_EN.md
index 63b5510be2d38..76ffd8b9e0d01 100644
--- a/lcci/17.16.The Masseuse/README_EN.md	
+++ b/lcci/17.16.The Masseuse/README_EN.md	
@@ -116,6 +116,24 @@ function massage(nums: number[]): number {
 }
 ```
 
+```swift
+class Solution {
+    func massage(_ nums: [Int]) -> Int {
+        var f = 0
+        var g = 0
+        
+        for x in nums {
+            let ff = g + x
+            let gg = max(f, g)
+            f = ff
+            g = gg
+        }
+        
+        return max(f, g)
+    }
+}
+```
+
 <!-- tabs:end -->
 
 <!-- end -->
diff --git a/lcci/17.16.The Masseuse/Solution.swift b/lcci/17.16.The Masseuse/Solution.swift
new file mode 100644
index 0000000000000..f4c9aef040017
--- /dev/null
+++ b/lcci/17.16.The Masseuse/Solution.swift	
@@ -0,0 +1,15 @@
+class Solution {
+    func massage(_ nums: [Int]) -> Int {
+        var f = 0
+        var g = 0
+        
+        for x in nums {
+            let ff = g + x
+            let gg = max(f, g)
+            f = ff
+            g = gg
+        }
+        
+        return max(f, g)
+    }
+}
\ No newline at end of file

From ed2c85c5fec40a73b77c5d18fe1994aad10cbe52 Mon Sep 17 00:00:00 2001
From: Lanre Adedara <lanre.adedara@shara.co>
Date: Mon, 13 May 2024 08:15:28 +0100
Subject: [PATCH 06/12] feat: add swift implementation to lcci problem:
 No.17.17 (#2804)

---
 lcci/17.17.Multi Search/README.md      | 70 ++++++++++++++++++++++++++
 lcci/17.17.Multi Search/README_EN.md   | 70 ++++++++++++++++++++++++++
 lcci/17.17.Multi Search/Solution.swift | 67 ++++++++++++++++++++++++
 3 files changed, 207 insertions(+)
 create mode 100644 lcci/17.17.Multi Search/Solution.swift

diff --git a/lcci/17.17.Multi Search/README.md b/lcci/17.17.Multi Search/README.md
index 5223a7ecc7ee0..d101f94b79732 100644
--- a/lcci/17.17.Multi Search/README.md	
+++ b/lcci/17.17.Multi Search/README.md	
@@ -246,6 +246,76 @@ func multiSearch(big string, smalls []string) [][]int {
 }
 ```
 
+```swift
+class TrieNode {
+    var idx: Int
+    var children: [TrieNode?]
+
+    init() {
+        self.idx = -1
+        self.children = Array(repeating: nil, count: 26)
+    }
+}
+
+class Trie {
+    private let root: TrieNode
+
+    init() {
+        self.root = TrieNode()
+    }
+
+    func insert(_ word: String, _ index: Int) {
+        var node = root
+        for ch in word {
+            let i = Int(ch.asciiValue! - Character("a").asciiValue!)
+            if node.children[i] == nil {
+                node.children[i] = TrieNode()
+            }
+            node = node.children[i]!
+        }
+        node.idx = index
+    }
+
+    func search(_ word: String) -> [Int] {
+        var node = root
+        var results = [Int]()
+        for ch in word {
+            let i = Int(ch.asciiValue! - Character("a").asciiValue!)
+            if node.children[i] == nil {
+                break
+            }
+            node = node.children[i]!
+            if node.idx != -1 {
+                results.append(node.idx)
+            }
+        }
+        return results
+    }
+}
+
+class Solution {
+    func multiSearch(_ big: String, _ smalls: [String]) -> [[Int]] {
+        let trie = Trie()
+        for (index, small) in smalls.enumerated() {
+            trie.insert(small, index)
+        }
+
+        var results = Array(repeating: [Int](), count: smalls.count)
+        let bigChars = Array(big)
+
+        for i in 0..<bigChars.count {
+            let substring = String(bigChars[i...])
+            let indices = trie.search(substring)
+            for index in indices {
+                results[index].append(i)
+            }
+        }
+
+        return results
+    }
+}
+```
+
 <!-- tabs:end -->
 
 <!-- end -->
diff --git a/lcci/17.17.Multi Search/README_EN.md b/lcci/17.17.Multi Search/README_EN.md
index 046e3639f1730..0ca55de5c6071 100644
--- a/lcci/17.17.Multi Search/README_EN.md	
+++ b/lcci/17.17.Multi Search/README_EN.md	
@@ -251,6 +251,76 @@ func multiSearch(big string, smalls []string) [][]int {
 }
 ```
 
+```swift
+class TrieNode {
+    var idx: Int
+    var children: [TrieNode?]
+
+    init() {
+        self.idx = -1
+        self.children = Array(repeating: nil, count: 26)
+    }
+}
+
+class Trie {
+    private let root: TrieNode
+
+    init() {
+        self.root = TrieNode()
+    }
+
+    func insert(_ word: String, _ index: Int) {
+        var node = root
+        for ch in word {
+            let i = Int(ch.asciiValue! - Character("a").asciiValue!)
+            if node.children[i] == nil {
+                node.children[i] = TrieNode()
+            }
+            node = node.children[i]!
+        }
+        node.idx = index
+    }
+
+    func search(_ word: String) -> [Int] {
+        var node = root
+        var results = [Int]()
+        for ch in word {
+            let i = Int(ch.asciiValue! - Character("a").asciiValue!)
+            if node.children[i] == nil {
+                break
+            }
+            node = node.children[i]!
+            if node.idx != -1 {
+                results.append(node.idx)
+            }
+        }
+        return results
+    }
+}
+
+class Solution {
+    func multiSearch(_ big: String, _ smalls: [String]) -> [[Int]] {
+        let trie = Trie()
+        for (index, small) in smalls.enumerated() {
+            trie.insert(small, index)
+        }
+
+        var results = Array(repeating: [Int](), count: smalls.count)
+        let bigChars = Array(big)
+
+        for i in 0..<bigChars.count {
+            let substring = String(bigChars[i...])
+            let indices = trie.search(substring)
+            for index in indices {
+                results[index].append(i)
+            }
+        }
+
+        return results
+    }
+}
+```
+
 <!-- tabs:end -->
 
 <!-- end -->
diff --git a/lcci/17.17.Multi Search/Solution.swift b/lcci/17.17.Multi Search/Solution.swift
new file mode 100644
index 0000000000000..e0c8e81408fb6
--- /dev/null
+++ b/lcci/17.17.Multi Search/Solution.swift	
@@ -0,0 +1,67 @@
+class TrieNode {
+    var idx: Int
+    var children: [TrieNode?]
+
+    init() {
+        self.idx = -1
+        self.children = Array(repeating: nil, count: 26)
+    }
+}
+
+class Trie {
+    private let root: TrieNode
+
+    init() {
+        self.root = TrieNode()
+    }
+
+    func insert(_ word: String, _ index: Int) {
+        var node = root
+        for ch in word {
+            let i = Int(ch.asciiValue! - Character("a").asciiValue!)
+            if node.children[i] == nil {
+                node.children[i] = TrieNode()
+            }
+            node = node.children[i]!
+        }
+        node.idx = index
+    }
+
+    func search(_ word: String) -> [Int] {
+        var node = root
+        var results = [Int]()
+        for ch in word {
+            let i = Int(ch.asciiValue! - Character("a").asciiValue!)
+            if node.children[i] == nil {
+                break
+            }
+            node = node.children[i]!
+            if node.idx != -1 {
+                results.append(node.idx)
+            }
+        }
+        return results
+    }
+}
+
+class Solution {
+    func multiSearch(_ big: String, _ smalls: [String]) -> [[Int]] {
+        let trie = Trie()
+        for (index, small) in smalls.enumerated() {
+            trie.insert(small, index)
+        }
+
+        var results = Array(repeating: [Int](), count: smalls.count)
+        let bigChars = Array(big)
+
+        for i in 0..<bigChars.count {
+            let substring = String(bigChars[i...])
+            let indices = trie.search(substring)
+            for index in indices {
+                results[index].append(i)
+            }
+        }
+
+        return results
+    }
+}
\ No newline at end of file

From a760faf4aabd1738ca0c1448568ef8a4edf75a83 Mon Sep 17 00:00:00 2001
From: Lanre Adedara <lanre.adedara@shara.co>
Date: Mon, 13 May 2024 08:15:47 +0100
Subject: [PATCH 07/12] feat: add swift implementation to lcci problem:
 No.17.18 (#2805)

---
 lcci/17.18.Shortest Supersequence/README.md   | 44 +++++++++++++++++++
 .../17.18.Shortest Supersequence/README_EN.md | 44 +++++++++++++++++++
 .../Solution.swift                            | 41 +++++++++++++++++
 3 files changed, 129 insertions(+)
 create mode 100644 lcci/17.18.Shortest Supersequence/Solution.swift

diff --git a/lcci/17.18.Shortest Supersequence/README.md b/lcci/17.18.Shortest Supersequence/README.md
index 60e46bd5b94c6..875bcfe96467c 100644
--- a/lcci/17.18.Shortest Supersequence/README.md	
+++ b/lcci/17.18.Shortest Supersequence/README.md	
@@ -187,6 +187,50 @@ function shortestSeq(big: number[], small: number[]): number[] {
 }
 ```
 
+```swift
+class Solution {
+    func shortestSeq(_ big: [Int], _ small: [Int]) -> [Int] {
+        let needCount = small.count
+        var need = [Int: Int]()
+        var window = [Int: Int]()
+        small.forEach { need[$0, default: 0] += 1 }
+        
+        var count = needCount
+        var minLength = Int.max
+        var result = (-1, -1)
+        
+        var left = 0
+        for right in 0..<big.count {
+            let element = big[right]
+            if need[element] != nil {
+                window[element, default: 0] += 1
+                if window[element]! <= need[element]! {
+                    count -= 1
+                }
+            }
+            
+            while count == 0 {
+                if right - left + 1 < minLength {
+                    minLength = right - left + 1
+                    result = (left, right)
+                }
+                
+                let leftElement = big[left]
+                if need[leftElement] != nil {
+                    window[leftElement]! -= 1
+                    if window[leftElement]! < need[leftElement]! {
+                        count += 1
+                    }
+                }
+                left += 1
+            }
+        }
+        
+        return result.0 == -1 ? [] : [result.0, result.1]
+    }
+}
+```
+
 <!-- tabs:end -->
 
 <!-- end -->
diff --git a/lcci/17.18.Shortest Supersequence/README_EN.md b/lcci/17.18.Shortest Supersequence/README_EN.md
index 9a5847f4fba9e..a9abfa2daeb60 100644
--- a/lcci/17.18.Shortest Supersequence/README_EN.md	
+++ b/lcci/17.18.Shortest Supersequence/README_EN.md	
@@ -191,6 +191,50 @@ function shortestSeq(big: number[], small: number[]): number[] {
 }
 ```
 
+```swift
+class Solution {
+    func shortestSeq(_ big: [Int], _ small: [Int]) -> [Int] {
+        let needCount = small.count
+        var need = [Int: Int]()
+        var window = [Int: Int]()
+        small.forEach { need[$0, default: 0] += 1 }
+        
+        var count = needCount
+        var minLength = Int.max
+        var result = (-1, -1)
+        
+        var left = 0
+        for right in 0..<big.count {
+            let element = big[right]
+            if need[element] != nil {
+                window[element, default: 0] += 1
+                if window[element]! <= need[element]! {
+                    count -= 1
+                }
+            }
+            
+            while count == 0 {
+                if right - left + 1 < minLength {
+                    minLength = right - left + 1
+                    result = (left, right)
+                }
+                
+                let leftElement = big[left]
+                if need[leftElement] != nil {
+                    window[leftElement]! -= 1
+                    if window[leftElement]! < need[leftElement]! {
+                        count += 1
+                    }
+                }
+                left += 1
+            }
+        }
+        
+        return result.0 == -1 ? [] : [result.0, result.1]
+    }
+}
+```
+
 <!-- tabs:end -->
 
 <!-- end -->
diff --git a/lcci/17.18.Shortest Supersequence/Solution.swift b/lcci/17.18.Shortest Supersequence/Solution.swift
new file mode 100644
index 0000000000000..7fc3c68e7088e
--- /dev/null
+++ b/lcci/17.18.Shortest Supersequence/Solution.swift	
@@ -0,0 +1,41 @@
+class Solution {
+    func shortestSeq(_ big: [Int], _ small: [Int]) -> [Int] {
+        let needCount = small.count
+        var need = [Int: Int]()
+        var window = [Int: Int]()
+        small.forEach { need[$0, default: 0] += 1 }
+        
+        var count = needCount
+        var minLength = Int.max
+        var result = (-1, -1)
+        
+        var left = 0
+        for right in 0..<big.count {
+            let element = big[right]
+            if need[element] != nil {
+                window[element, default: 0] += 1
+                if window[element]! <= need[element]! {
+                    count -= 1
+                }
+            }
+            
+            while count == 0 {
+                if right - left + 1 < minLength {
+                    minLength = right - left + 1
+                    result = (left, right)
+                }
+                
+                let leftElement = big[left]
+                if need[leftElement] != nil {
+                    window[leftElement]! -= 1
+                    if window[leftElement]! < need[leftElement]! {
+                        count += 1
+                    }
+                }
+                left += 1
+            }
+        }
+        
+        return result.0 == -1 ? [] : [result.0, result.1]
+    }
+}
\ No newline at end of file

From 2283a9ecbac35584fdebf04b24ec4f672e924b43 Mon Sep 17 00:00:00 2001
From: Lanre Adedara <lanre.adedara@shara.co>
Date: Mon, 13 May 2024 08:16:04 +0100
Subject: [PATCH 08/12] feat: add swift implementation to lcci problem:
 No.17.19 (#2806)

---
 lcci/17.19.Missing Two/README.md      | 36 +++++++++++++++++++++++++++
 lcci/17.19.Missing Two/README_EN.md   | 36 +++++++++++++++++++++++++++
 lcci/17.19.Missing Two/Solution.swift | 33 ++++++++++++++++++++++++
 3 files changed, 105 insertions(+)
 create mode 100644 lcci/17.19.Missing Two/Solution.swift

diff --git a/lcci/17.19.Missing Two/README.md b/lcci/17.19.Missing Two/README.md
index 64ae1460d273d..307770e9a3b31 100644
--- a/lcci/17.19.Missing Two/README.md	
+++ b/lcci/17.19.Missing Two/README.md	
@@ -142,6 +142,42 @@ func missingTwo(nums []int) []int {
 }
 ```
 
+```swift
+class Solution {
+    func missingTwo(_ nums: [Int]) -> [Int] {
+        let n = nums.count + 2
+        var xor = 0
+        
+        for num in nums {
+            xor ^= num
+        }
+        
+        for i in 1...n {
+            xor ^= i
+        }
+        
+        let diff = xor & (-xor)
+        
+        var a = 0
+        
+        for num in nums {
+            if (num & diff) != 0 {
+                a ^= num
+            }
+        }
+        
+        for i in 1...n {
+            if (i & diff) != 0 {
+                a ^= i
+            }
+        }
+        
+        let b = xor ^ a
+        return [a, b]
+    }
+}
+```
+
 <!-- tabs:end -->
 
 <!-- end -->
diff --git a/lcci/17.19.Missing Two/README_EN.md b/lcci/17.19.Missing Two/README_EN.md
index 31be29535a171..57839d0d5b15c 100644
--- a/lcci/17.19.Missing Two/README_EN.md	
+++ b/lcci/17.19.Missing Two/README_EN.md	
@@ -135,6 +135,42 @@ func missingTwo(nums []int) []int {
 }
 ```
 
+```swift
+class Solution {
+    func missingTwo(_ nums: [Int]) -> [Int] {
+        let n = nums.count + 2
+        var xor = 0
+        
+        for num in nums {
+            xor ^= num
+        }
+        
+        for i in 1...n {
+            xor ^= i
+        }
+        
+        let diff = xor & (-xor)
+        
+        var a = 0
+        
+        for num in nums {
+            if (num & diff) != 0 {
+                a ^= num
+            }
+        }
+        
+        for i in 1...n {
+            if (i & diff) != 0 {
+                a ^= i
+            }
+        }
+        
+        let b = xor ^ a
+        return [a, b]
+    }
+}
+```
+
 <!-- tabs:end -->
 
 <!-- end -->
diff --git a/lcci/17.19.Missing Two/Solution.swift b/lcci/17.19.Missing Two/Solution.swift
new file mode 100644
index 0000000000000..dc8e26c9e7b82
--- /dev/null
+++ b/lcci/17.19.Missing Two/Solution.swift	
@@ -0,0 +1,33 @@
+class Solution {
+    func missingTwo(_ nums: [Int]) -> [Int] {
+        let n = nums.count + 2
+        var xor = 0
+        
+        for num in nums {
+            xor ^= num
+        }
+        
+        for i in 1...n {
+            xor ^= i
+        }
+        
+        let diff = xor & (-xor)
+        
+        var a = 0
+        
+        for num in nums {
+            if (num & diff) != 0 {
+                a ^= num
+            }
+        }
+        
+        for i in 1...n {
+            if (i & diff) != 0 {
+                a ^= i
+            }
+        }
+        
+        let b = xor ^ a
+        return [a, b]
+    }
+}
\ No newline at end of file

From 33ee2c62a8b72f4f0e0e6795e99b083685ced6ab Mon Sep 17 00:00:00 2001
From: Lanre Adedara <lanre.adedara@shara.co>
Date: Mon, 13 May 2024 08:16:24 +0100
Subject: [PATCH 09/12] feat: add swift implementation to lcci problem:
 No.17.20 (#2807)

---
 lcci/17.20.Continuous Median/README.md      | 108 ++++++++++++++++++++
 lcci/17.20.Continuous Median/README_EN.md   | 108 ++++++++++++++++++++
 lcci/17.20.Continuous Median/Solution.swift | 105 +++++++++++++++++++
 3 files changed, 321 insertions(+)
 create mode 100644 lcci/17.20.Continuous Median/Solution.swift

diff --git a/lcci/17.20.Continuous Median/README.md b/lcci/17.20.Continuous Median/README.md
index 41c5cc487a17f..52cdc3c273746 100644
--- a/lcci/17.20.Continuous Median/README.md	
+++ b/lcci/17.20.Continuous Median/README.md	
@@ -189,6 +189,114 @@ func (h *hp) Pop() any {
 }
 ```
 
+```swift
+class MedianFinder {
+    private var minHeap = Heap<Int>(sort: <)
+    private var maxHeap = Heap<Int>(sort: >)
+
+    init() {
+    }
+
+    func addNum(_ num: Int) {
+        maxHeap.insert(num)
+        minHeap.insert(maxHeap.remove()!)
+
+        if maxHeap.count < minHeap.count {
+            maxHeap.insert(minHeap.remove()!)
+        }
+    }
+
+    func findMedian() -> Double {
+        if maxHeap.count > minHeap.count {
+            return Double(maxHeap.peek()!)
+        }
+        return (Double(maxHeap.peek()!) + Double(minHeap.peek()!)) / 2.0
+    }
+}
+
+struct Heap<T> {
+    var elements: [T]
+    let sort: (T, T) -> Bool
+
+    init(sort: @escaping (T, T) -> Bool, elements: [T] = []) {
+        self.sort = sort
+        self.elements = elements
+        if !elements.isEmpty {
+            for i in stride(from: elements.count / 2 - 1, through: 0, by: -1) {
+                siftDown(from: i)
+            }
+        }
+    }
+
+    var isEmpty: Bool {
+        return elements.isEmpty
+    }
+
+    var count: Int {
+        return elements.count
+    }
+
+    func peek() -> T? {
+        return elements.first
+    }
+
+    mutating func insert(_ value: T) {
+        elements.append(value)
+        siftUp(from: elements.count - 1)
+    }
+
+    mutating func remove() -> T? {
+        guard !elements.isEmpty else { return nil }
+        elements.swapAt(0, elements.count - 1)
+        let removedValue = elements.removeLast()
+        siftDown(from: 0)
+        return removedValue
+    }
+
+    private mutating func siftUp(from index: Int) {
+        var child = index
+        var parent = parentIndex(ofChildAt: child)
+        while child > 0 && sort(elements[child], elements[parent]) {
+            elements.swapAt(child, parent)
+            child = parent
+            parent = parentIndex(ofChildAt: child)
+        }
+    }
+
+    private mutating func siftDown(from index: Int) {
+        var parent = index
+        while true {
+            let left = leftChildIndex(ofParentAt: parent)
+            let right = rightChildIndex(ofParentAt: parent)
+            var candidate = parent
+            if left < count && sort(elements[left], elements[candidate]) {
+                candidate = left
+            }
+            if right < count && sort(elements[right], elements[candidate]) {
+                candidate = right
+            }
+            if candidate == parent {
+                return
+            }
+            elements.swapAt(parent, candidate)
+            parent = candidate
+        }
+    }
+
+    private func parentIndex(ofChildAt index: Int) -> Int {
+        return (index - 1) / 2
+    }
+
+    private func leftChildIndex(ofParentAt index: Int) -> Int {
+        return 2 * index + 1
+    }
+
+    private func rightChildIndex(ofParentAt index: Int) -> Int {
+        return 2 * index + 2
+    }
+}
+```
+
 <!-- tabs:end -->
 
 <!-- end -->
diff --git a/lcci/17.20.Continuous Median/README_EN.md b/lcci/17.20.Continuous Median/README_EN.md
index 36712289d28f6..2692fa4c14aeb 100644
--- a/lcci/17.20.Continuous Median/README_EN.md	
+++ b/lcci/17.20.Continuous Median/README_EN.md	
@@ -185,6 +185,114 @@ func (h *hp) Pop() any {
 }
 ```
 
+```swift
+class MedianFinder {
+    private var minHeap = Heap<Int>(sort: <)
+    private var maxHeap = Heap<Int>(sort: >)
+
+    init() {
+    }
+
+    func addNum(_ num: Int) {
+        maxHeap.insert(num)
+        minHeap.insert(maxHeap.remove()!)
+
+        if maxHeap.count < minHeap.count {
+            maxHeap.insert(minHeap.remove()!)
+        }
+    }
+
+    func findMedian() -> Double {
+        if maxHeap.count > minHeap.count {
+            return Double(maxHeap.peek()!)
+        }
+        return (Double(maxHeap.peek()!) + Double(minHeap.peek()!)) / 2.0
+    }
+}
+
+struct Heap<T> {
+    var elements: [T]
+    let sort: (T, T) -> Bool
+
+    init(sort: @escaping (T, T) -> Bool, elements: [T] = []) {
+        self.sort = sort
+        self.elements = elements
+        if !elements.isEmpty {
+            for i in stride(from: elements.count / 2 - 1, through: 0, by: -1) {
+                siftDown(from: i)
+            }
+        }
+    }
+
+    var isEmpty: Bool {
+        return elements.isEmpty
+    }
+
+    var count: Int {
+        return elements.count
+    }
+
+    func peek() -> T? {
+        return elements.first
+    }
+
+    mutating func insert(_ value: T) {
+        elements.append(value)
+        siftUp(from: elements.count - 1)
+    }
+
+    mutating func remove() -> T? {
+        guard !elements.isEmpty else { return nil }
+        elements.swapAt(0, elements.count - 1)
+        let removedValue = elements.removeLast()
+        siftDown(from: 0)
+        return removedValue
+    }
+
+    private mutating func siftUp(from index: Int) {
+        var child = index
+        var parent = parentIndex(ofChildAt: child)
+        while child > 0 && sort(elements[child], elements[parent]) {
+            elements.swapAt(child, parent)
+            child = parent
+            parent = parentIndex(ofChildAt: child)
+        }
+    }
+
+    private mutating func siftDown(from index: Int) {
+        var parent = index
+        while true {
+            let left = leftChildIndex(ofParentAt: parent)
+            let right = rightChildIndex(ofParentAt: parent)
+            var candidate = parent
+            if left < count && sort(elements[left], elements[candidate]) {
+                candidate = left
+            }
+            if right < count && sort(elements[right], elements[candidate]) {
+                candidate = right
+            }
+            if candidate == parent {
+                return
+            }
+            elements.swapAt(parent, candidate)
+            parent = candidate
+        }
+    }
+
+    private func parentIndex(ofChildAt index: Int) -> Int {
+        return (index - 1) / 2
+    }
+
+    private func leftChildIndex(ofParentAt index: Int) -> Int {
+        return 2 * index + 1
+    }
+
+    private func rightChildIndex(ofParentAt index: Int) -> Int {
+        return 2 * index + 2
+    }
+}
+```
+
 <!-- tabs:end -->
 
 <!-- end -->
diff --git a/lcci/17.20.Continuous Median/Solution.swift b/lcci/17.20.Continuous Median/Solution.swift
new file mode 100644
index 0000000000000..edd2293a4803c
--- /dev/null
+++ b/lcci/17.20.Continuous Median/Solution.swift	
@@ -0,0 +1,105 @@
+class MedianFinder {
+    private var minHeap = Heap<Int>(sort: <)
+    private var maxHeap = Heap<Int>(sort: >)
+
+    init() {
+    }
+
+    func addNum(_ num: Int) {
+        maxHeap.insert(num)
+        minHeap.insert(maxHeap.remove()!)
+
+        if maxHeap.count < minHeap.count {
+            maxHeap.insert(minHeap.remove()!)
+        }
+    }
+
+    func findMedian() -> Double {
+        if maxHeap.count > minHeap.count {
+            return Double(maxHeap.peek()!)
+        }
+        return (Double(maxHeap.peek()!) + Double(minHeap.peek()!)) / 2.0
+    }
+}
+
+struct Heap<T> {
+    var elements: [T]
+    let sort: (T, T) -> Bool
+
+    init(sort: @escaping (T, T) -> Bool, elements: [T] = []) {
+        self.sort = sort
+        self.elements = elements
+        if !elements.isEmpty {
+            for i in stride(from: elements.count / 2 - 1, through: 0, by: -1) {
+                siftDown(from: i)
+            }
+        }
+    }
+
+    var isEmpty: Bool {
+        return elements.isEmpty
+    }
+
+    var count: Int {
+        return elements.count
+    }
+
+    func peek() -> T? {
+        return elements.first
+    }
+
+    mutating func insert(_ value: T) {
+        elements.append(value)
+        siftUp(from: elements.count - 1)
+    }
+
+    mutating func remove() -> T? {
+        guard !elements.isEmpty else { return nil }
+        elements.swapAt(0, elements.count - 1)
+        let removedValue = elements.removeLast()
+        siftDown(from: 0)
+        return removedValue
+    }
+
+    private mutating func siftUp(from index: Int) {
+        var child = index
+        var parent = parentIndex(ofChildAt: child)
+        while child > 0 && sort(elements[child], elements[parent]) {
+            elements.swapAt(child, parent)
+            child = parent
+            parent = parentIndex(ofChildAt: child)
+        }
+    }
+
+    private mutating func siftDown(from index: Int) {
+        var parent = index
+        while true {
+            let left = leftChildIndex(ofParentAt: parent)
+            let right = rightChildIndex(ofParentAt: parent)
+            var candidate = parent
+            if left < count && sort(elements[left], elements[candidate]) {
+                candidate = left
+            }
+            if right < count && sort(elements[right], elements[candidate]) {
+                candidate = right
+            }
+            if candidate == parent {
+                return
+            }
+            elements.swapAt(parent, candidate)
+            parent = candidate
+        }
+    }
+
+    private func parentIndex(ofChildAt index: Int) -> Int {
+        return (index - 1) / 2
+    }
+
+    private func leftChildIndex(ofParentAt index: Int) -> Int {
+        return 2 * index + 1
+    }
+
+    private func rightChildIndex(ofParentAt index: Int) -> Int {
+        return 2 * index + 2
+    }
+}
\ No newline at end of file

From 6c115d07cc0ac76c57bfd8963ddf86a15e01622c Mon Sep 17 00:00:00 2001
From: Lanre Adedara <lanre.adedara@shara.co>
Date: Mon, 13 May 2024 08:16:45 +0100
Subject: [PATCH 10/12] feat: add swift implementation to lcci problem:
 No.17.21 (#2808)

---
 lcci/17.21.Volume of Histogram/README.md      | 32 +++++++++++++++++++
 lcci/17.21.Volume of Histogram/README_EN.md   | 32 +++++++++++++++++++
 lcci/17.21.Volume of Histogram/Solution.swift | 29 +++++++++++++++++
 3 files changed, 93 insertions(+)
 create mode 100644 lcci/17.21.Volume of Histogram/Solution.swift

diff --git a/lcci/17.21.Volume of Histogram/README.md b/lcci/17.21.Volume of Histogram/README.md
index f7efe350feec0..7b4ffd2cfe962 100644
--- a/lcci/17.21.Volume of Histogram/README.md	
+++ b/lcci/17.21.Volume of Histogram/README.md	
@@ -156,6 +156,38 @@ public class Solution {
 }
 ```
 
+```swift
+class Solution {
+    func trap(_ height: [Int]) -> Int {
+        let n = height.count
+        if n < 3 {
+            return 0
+        }
+
+        var left = [Int](repeating: 0, count: n)
+        var right = [Int](repeating: 0, count: n)
+
+        left[0] = height[0]
+        right[n - 1] = height[n - 1]
+
+        for i in 1..<n {
+            left[i] = max(left[i - 1], height[i])
+        }
+
+        for i in stride(from: n - 2, through: 0, by: -1) {
+            right[i] = max(right[i + 1], height[i])
+        }
+
+        var ans = 0
+        for i in 0..<n {
+            ans += min(left[i], right[i]) - height[i]
+        }
+
+        return ans
+    }
+}
+```
+
 <!-- tabs:end -->
 
 <!-- end -->
diff --git a/lcci/17.21.Volume of Histogram/README_EN.md b/lcci/17.21.Volume of Histogram/README_EN.md
index c934f608d3a0d..a0557cd372146 100644
--- a/lcci/17.21.Volume of Histogram/README_EN.md	
+++ b/lcci/17.21.Volume of Histogram/README_EN.md	
@@ -150,6 +150,38 @@ public class Solution {
 }
 ```
 
+```swift
+class Solution {
+    func trap(_ height: [Int]) -> Int {
+        let n = height.count
+        if n < 3 {
+            return 0
+        }
+
+        var left = [Int](repeating: 0, count: n)
+        var right = [Int](repeating: 0, count: n)
+
+        left[0] = height[0]
+        right[n - 1] = height[n - 1]
+
+        for i in 1..<n {
+            left[i] = max(left[i - 1], height[i])
+        }
+
+        for i in stride(from: n - 2, through: 0, by: -1) {
+            right[i] = max(right[i + 1], height[i])
+        }
+
+        var ans = 0
+        for i in 0..<n {
+            ans += min(left[i], right[i]) - height[i]
+        }
+
+        return ans
+    }
+}
+```
+
 <!-- tabs:end -->
 
 <!-- end -->
diff --git a/lcci/17.21.Volume of Histogram/Solution.swift b/lcci/17.21.Volume of Histogram/Solution.swift
new file mode 100644
index 0000000000000..61d30a3e741d4
--- /dev/null
+++ b/lcci/17.21.Volume of Histogram/Solution.swift	
@@ -0,0 +1,29 @@
+class Solution {
+    func trap(_ height: [Int]) -> Int {
+        let n = height.count
+        if n < 3 {
+            return 0
+        }
+        
+        var left = [Int](repeating: 0, count: n)
+        var right = [Int](repeating: 0, count: n)
+        
+        left[0] = height[0]
+        right[n - 1] = height[n - 1]
+
+        for i in 1..<n {
+            left[i] = max(left[i - 1], height[i])
+        }
+
+        for i in stride(from: n - 2, through: 0, by: -1) {
+            right[i] = max(right[i + 1], height[i])
+        }
+
+        var ans = 0
+        for i in 0..<n {
+            ans += min(left[i], right[i]) - height[i]
+        }
+        
+        return ans
+    }
+}
\ No newline at end of file

From 2e542d1f32e799bd3cbc73cc04a5c96a07b33d55 Mon Sep 17 00:00:00 2001
From: Libin YANG <contact@yanglibin.info>
Date: Mon, 13 May 2024 17:21:41 +0800
Subject: [PATCH 11/12] feat: add solutions to lc problem: No.3149 (#2809)

No.3149.Find the Minimum Cost Array Permutation
---
 .../README.md                                 | 227 +++++++++++++++++-
 .../README_EN.md                              | 227 +++++++++++++++++-
 .../Solution.cpp                              |  42 ++++
 .../Solution.go                               |  52 ++++
 .../Solution.java                             |  47 ++++
 .../Solution.py                               |  27 +++
 .../Solution.ts                               |  37 +++
 7 files changed, 651 insertions(+), 8 deletions(-)
 create mode 100644 solution/3100-3199/3149.Find the Minimum Cost Array Permutation/Solution.cpp
 create mode 100644 solution/3100-3199/3149.Find the Minimum Cost Array Permutation/Solution.go
 create mode 100644 solution/3100-3199/3149.Find the Minimum Cost Array Permutation/Solution.java
 create mode 100644 solution/3100-3199/3149.Find the Minimum Cost Array Permutation/Solution.py
 create mode 100644 solution/3100-3199/3149.Find the Minimum Cost Array Permutation/Solution.ts

diff --git a/solution/3100-3199/3149.Find the Minimum Cost Array Permutation/README.md b/solution/3100-3199/3149.Find the Minimum Cost Array Permutation/README.md
index 004a6b897aa93..dc34a153748f6 100644
--- a/solution/3100-3199/3149.Find the Minimum Cost Array Permutation/README.md	
+++ b/solution/3100-3199/3149.Find the Minimum Cost Array Permutation/README.md	
@@ -55,24 +55,243 @@
 
 ## 解法
 
-### 方法一
+### 方法一：记忆化搜索
+
+我们注意到，对于任意一个排列 $\text{perm}$，把它循环向左移动任意次，得到的排列分数依然是相同的。由于题目要求返回字典序最小的排列，因此我们可以确定排列的第一个元素一定是 $0$。
+
+另外，由于题目的数据范围不超过 $14$，我们可以考虑使用状态压缩的方法，来表示当前排列选取的数字集合。我们用一个长度为 $n$ 的二进制数 $\text{mask}$ 来表示当前排列选取的数字集合，其中 $\text{mask}$ 的第 $i$ 位为 $1$ 表示数字 $i$ 已经被选取，为 $0$ 表示数字 $i$ 还未被选取。
+
+我们设计一个函数 $\text{dfs}(\text{mask}, \text{pre})$，表示当前排列选取的数字集合为 $\text{mask}$，且最后一个选取的数字为 $\text{pre}$ 时，得到的排列的最小分数。初始时我们将数字 $0$ 加入到排列中。
+
+函数 $\text{dfs}(\text{mask}, \text{pre})$ 的计算过程如下：
+
+-   如果 $\text{mask}$ 的二进制表示中 $1$ 的个数为 $n$，即 $\text{mask} = 2^n - 1$，表示所有数字都已经被选取，此时返回 $\text{abs}(\text{pre} - \text{nums}[0])$；
+-   否则，我们枚举下一个选取的数字 $\text{cur}$，如果数字 $\text{cur}$ 还未被选取，那么我们可以将数字 $\text{cur}$ 加入到排列中，此时排列的分数为 $|\text{pre} - \text{nums}[\text{cur}]| + \text{dfs}(\text{mask} \, | \, 1 << \text{cur}, \text{cur})$，我们需要取所有 $\text{cur}$ 中分数的最小值。
+
+最后，我们利用一个函数 $\text{g}(\text{mask}, \text{pre})$ 来构造得到最小分数的排列。我们首先将数字 $\text{pre}$ 加入到排列中，然后枚举下一个选取的数字 $\text{cur}$，如果数字 $\text{cur}$ 还未被选取，且满足 $|\text{pre} - \text{nums}[\text{cur}]| + \text{dfs}(\text{mask} \, | \, 1 << \text{cur}, \text{cur})$ 的值等于 $\text{dfs}(\text{mask}, \text{pre})$，那么我们就可以将数字 $\text{cur}$ 加入到排列中。
+
+时间复杂度 $(n^2 \times 2^n)$，空间复杂度 $O(n \times 2^n)$。其中 $n$ 为数组 $\text{nums}$ 的长度。
 
 <!-- tabs:start -->
 
 ```python
-
+class Solution:
+    def findPermutation(self, nums: List[int]) -> List[int]:
+        @cache
+        def dfs(mask: int, pre: int) -> int:
+            if mask == (1 << n) - 1:
+                return abs(pre - nums[0])
+            res = inf
+            for cur in range(1, n):
+                if mask >> cur & 1 ^ 1:
+                    res = min(res, abs(pre - nums[cur]) + dfs(mask | 1 << cur, cur))
+            return res
+
+        def g(mask: int, pre: int):
+            ans.append(pre)
+            if mask == (1 << n) - 1:
+                return
+            res = dfs(mask, pre)
+            for cur in range(1, n):
+                if mask >> cur & 1 ^ 1:
+                    if abs(pre - nums[cur]) + dfs(mask | 1 << cur, cur) == res:
+                        g(mask | 1 << cur, cur)
+                        break
+
+        n = len(nums)
+        ans = []
+        g(1, 0)
+        return ans
 ```
 
 ```java
-
+class Solution {
+    private Integer[][] f;
+    private int[] nums;
+    private int[] ans;
+    private int n;
+
+    public int[] findPermutation(int[] nums) {
+        n = nums.length;
+        ans = new int[n];
+        this.nums = nums;
+        f = new Integer[1 << n][n];
+        g(1, 0, 0);
+        return ans;
+    }
+
+    private int dfs(int mask, int pre) {
+        if (mask == (1 << n) - 1) {
+            return Math.abs(pre - nums[0]);
+        }
+        if (f[mask][pre] != null) {
+            return f[mask][pre];
+        }
+        int res = Integer.MAX_VALUE;
+        for (int cur = 1; cur < n; ++cur) {
+            if ((mask >> cur & 1) == 0) {
+                res = Math.min(res, Math.abs(pre - nums[cur]) + dfs(mask | 1 << cur, cur));
+            }
+        }
+        return f[mask][pre] = res;
+    }
+
+    private void g(int mask, int pre, int k) {
+        ans[k] = pre;
+        if (mask == (1 << n) - 1) {
+            return;
+        }
+        int res = dfs(mask, pre);
+        for (int cur = 1; cur < n; ++cur) {
+            if ((mask >> cur & 1) == 0) {
+                if (Math.abs(pre - nums[cur]) + dfs(mask | 1 << cur, cur) == res) {
+                    g(mask | 1 << cur, cur, k + 1);
+                    break;
+                }
+            }
+        }
+    }
+}
 ```
 
 ```cpp
-
+class Solution {
+public:
+    vector<int> findPermutation(vector<int>& nums) {
+        int n = nums.size();
+        vector<int> ans;
+        int f[1 << n][n];
+        memset(f, -1, sizeof(f));
+        function<int(int, int)> dfs = [&](int mask, int pre) {
+            if (mask == (1 << n) - 1) {
+                return abs(pre - nums[0]);
+            }
+            int* res = &f[mask][pre];
+            if (*res != -1) {
+                return *res;
+            }
+            *res = INT_MAX;
+            for (int cur = 1; cur < n; ++cur) {
+                if (mask >> cur & 1 ^ 1) {
+                    *res = min(*res, abs(pre - nums[cur]) + dfs(mask | 1 << cur, cur));
+                }
+            }
+            return *res;
+        };
+        function<void(int, int)> g = [&](int mask, int pre) {
+            ans.push_back(pre);
+            if (mask == (1 << n) - 1) {
+                return;
+            }
+            int res = dfs(mask, pre);
+            for (int cur = 1; cur < n; ++cur) {
+                if (mask >> cur & 1 ^ 1) {
+                    if (abs(pre - nums[cur]) + dfs(mask | 1 << cur, cur) == res) {
+                        g(mask | 1 << cur, cur);
+                        break;
+                    }
+                }
+            }
+        };
+        g(1, 0);
+        return ans;
+    }
+};
 ```
 
 ```go
+func findPermutation(nums []int) (ans []int) {
+	n := len(nums)
+	f := make([][]int, 1<<n)
+	for i := range f {
+		f[i] = make([]int, n)
+		for j := range f[i] {
+			f[i][j] = -1
+		}
+	}
+	var dfs func(int, int) int
+	dfs = func(mask, pre int) int {
+		if mask == 1<<n-1 {
+			return abs(pre - nums[0])
+		}
+		if f[mask][pre] != -1 {
+			return f[mask][pre]
+		}
+		res := &f[mask][pre]
+		*res = math.MaxInt32
+		for cur := 1; cur < n; cur++ {
+			if mask>>cur&1 == 0 {
+				*res = min(*res, abs(pre-nums[cur])+dfs(mask|1<<cur, cur))
+			}
+		}
+		return *res
+	}
+	var g func(int, int)
+	g = func(mask, pre int) {
+		ans = append(ans, pre)
+		if mask == 1<<n-1 {
+			return
+		}
+		res := dfs(mask, pre)
+		for cur := 1; cur < n; cur++ {
+			if mask>>cur&1 == 0 {
+				if abs(pre-nums[cur])+dfs(mask|1<<cur, cur) == res {
+					g(mask|1<<cur, cur)
+					break
+				}
+			}
+		}
+	}
+	g(1, 0)
+	return
+}
+
+func abs(x int) int {
+	if x < 0 {
+		return -x
+	}
+	return x
+}
+```
 
+```ts
+function findPermutation(nums: number[]): number[] {
+    const n = nums.length;
+    const ans: number[] = [];
+    const f: number[][] = Array.from({ length: 1 << n }, () => Array(n).fill(-1));
+    const dfs = (mask: number, pre: number): number => {
+        if (mask === (1 << n) - 1) {
+            return Math.abs(pre - nums[0]);
+        }
+        if (f[mask][pre] !== -1) {
+            return f[mask][pre];
+        }
+        let res = Infinity;
+        for (let cur = 1; cur < n; ++cur) {
+            if (((mask >> cur) & 1) ^ 1) {
+                res = Math.min(res, Math.abs(pre - nums[cur]) + dfs(mask | (1 << cur), cur));
+            }
+        }
+        return (f[mask][pre] = res);
+    };
+    const g = (mask: number, pre: number) => {
+        ans.push(pre);
+        if (mask === (1 << n) - 1) {
+            return;
+        }
+        const res = dfs(mask, pre);
+        for (let cur = 1; cur < n; ++cur) {
+            if (((mask >> cur) & 1) ^ 1) {
+                if (Math.abs(pre - nums[cur]) + dfs(mask | (1 << cur), cur) === res) {
+                    g(mask | (1 << cur), cur);
+                    break;
+                }
+            }
+        }
+    };
+    g(1, 0);
+    return ans;
+}
 ```
 
 <!-- tabs:end -->
diff --git a/solution/3100-3199/3149.Find the Minimum Cost Array Permutation/README_EN.md b/solution/3100-3199/3149.Find the Minimum Cost Array Permutation/README_EN.md
index a3d637bba9e98..837790f976f3a 100644
--- a/solution/3100-3199/3149.Find the Minimum Cost Array Permutation/README_EN.md	
+++ b/solution/3100-3199/3149.Find the Minimum Cost Array Permutation/README_EN.md	
@@ -51,24 +51,243 @@
 
 ## Solutions
 
-### Solution 1
+### Solution 1: Memoization Search
+
+We notice that for any permutation $\text{perm}$, if we cyclically shift it to the left any number of times, the score of the permutation remains the same. Since the problem requires returning the lexicographically smallest permutation, we can determine that the first element of the permutation must be $0$.
+
+Also, since the data range of the problem does not exceed $14$, we can consider using the method of state compression to represent the set of numbers selected in the current permutation. We use a binary number $\text{mask}$ of length $n$ to represent the set of numbers selected in the current permutation, where the $i$-th bit of $\text{mask}$ is $1$ indicates that the number $i$ has been selected, and $0$ indicates that the number $i$ has not been selected yet.
+
+We design a function $\text{dfs}(\text{mask}, \text{pre})$, which represents the minimum score of the permutation obtained when the set of numbers selected in the current permutation is $\text{mask}$ and the last selected number is $\text{pre}$. Initially, we add the number $0$ to the permutation.
+
+The calculation process of the function $\text{dfs}(\text{mask}, \text{pre})$ is as follows:
+
+-   If the number of $1$s in the binary representation of $\text{mask}$ is $n$, that is, $\text{mask} = 2^n - 1$, it means that all numbers have been selected, then return $\text{abs}(\text{pre} - \text{nums}[0])$;
+-   Otherwise, we enumerate the next selected number $\text{cur}$. If the number $\text{cur}$ has not been selected yet, then we can add the number $\text{cur}$ to the permutation. At this time, the score of the permutation is $|\text{pre} - \text{nums}[\text{cur}]| + \text{dfs}(\text{mask} \, | \, 1 << \text{cur}, \text{cur})$. We need to take the minimum score among all $\text{cur}$.
+
+Finally, we use a function $\text{g}(\text{mask}, \text{pre})$ to construct the permutation that gets the minimum score. We first add the number $\text{pre}$ to the permutation, and then enumerate the next selected number $\text{cur}$. If the number $\text{cur}$ has not been selected yet, and it satisfies that the value of $|\text{pre} - \text{nums}[\text{cur}]| + \text{dfs}(\text{mask} \, | \, 1 << \text{cur}, \text{cur})$ is equal to $\text{dfs}(\text{mask}, \text{pre})$, then we can add the number $\text{cur}$ to the permutation.
+
+The time complexity is $(n^2 \times 2^n)$, and the space complexity is $O(n \times 2^n)$. Where $n$ is the length of the array $\text{nums}$.
 
 <!-- tabs:start -->
 
 ```python
-
+class Solution:
+    def findPermutation(self, nums: List[int]) -> List[int]:
+        @cache
+        def dfs(mask: int, pre: int) -> int:
+            if mask == (1 << n) - 1:
+                return abs(pre - nums[0])
+            res = inf
+            for cur in range(1, n):
+                if mask >> cur & 1 ^ 1:
+                    res = min(res, abs(pre - nums[cur]) + dfs(mask | 1 << cur, cur))
+            return res
+
+        def g(mask: int, pre: int):
+            ans.append(pre)
+            if mask == (1 << n) - 1:
+                return
+            res = dfs(mask, pre)
+            for cur in range(1, n):
+                if mask >> cur & 1 ^ 1:
+                    if abs(pre - nums[cur]) + dfs(mask | 1 << cur, cur) == res:
+                        g(mask | 1 << cur, cur)
+                        break
+
+        n = len(nums)
+        ans = []
+        g(1, 0)
+        return ans
 ```
 
 ```java
-
+class Solution {
+    private Integer[][] f;
+    private int[] nums;
+    private int[] ans;
+    private int n;
+
+    public int[] findPermutation(int[] nums) {
+        n = nums.length;
+        ans = new int[n];
+        this.nums = nums;
+        f = new Integer[1 << n][n];
+        g(1, 0, 0);
+        return ans;
+    }
+
+    private int dfs(int mask, int pre) {
+        if (mask == (1 << n) - 1) {
+            return Math.abs(pre - nums[0]);
+        }
+        if (f[mask][pre] != null) {
+            return f[mask][pre];
+        }
+        int res = Integer.MAX_VALUE;
+        for (int cur = 1; cur < n; ++cur) {
+            if ((mask >> cur & 1) == 0) {
+                res = Math.min(res, Math.abs(pre - nums[cur]) + dfs(mask | 1 << cur, cur));
+            }
+        }
+        return f[mask][pre] = res;
+    }
+
+    private void g(int mask, int pre, int k) {
+        ans[k] = pre;
+        if (mask == (1 << n) - 1) {
+            return;
+        }
+        int res = dfs(mask, pre);
+        for (int cur = 1; cur < n; ++cur) {
+            if ((mask >> cur & 1) == 0) {
+                if (Math.abs(pre - nums[cur]) + dfs(mask | 1 << cur, cur) == res) {
+                    g(mask | 1 << cur, cur, k + 1);
+                    break;
+                }
+            }
+        }
+    }
+}
 ```
 
 ```cpp
-
+class Solution {
+public:
+    vector<int> findPermutation(vector<int>& nums) {
+        int n = nums.size();
+        vector<int> ans;
+        int f[1 << n][n];
+        memset(f, -1, sizeof(f));
+        function<int(int, int)> dfs = [&](int mask, int pre) {
+            if (mask == (1 << n) - 1) {
+                return abs(pre - nums[0]);
+            }
+            int* res = &f[mask][pre];
+            if (*res != -1) {
+                return *res;
+            }
+            *res = INT_MAX;
+            for (int cur = 1; cur < n; ++cur) {
+                if (mask >> cur & 1 ^ 1) {
+                    *res = min(*res, abs(pre - nums[cur]) + dfs(mask | 1 << cur, cur));
+                }
+            }
+            return *res;
+        };
+        function<void(int, int)> g = [&](int mask, int pre) {
+            ans.push_back(pre);
+            if (mask == (1 << n) - 1) {
+                return;
+            }
+            int res = dfs(mask, pre);
+            for (int cur = 1; cur < n; ++cur) {
+                if (mask >> cur & 1 ^ 1) {
+                    if (abs(pre - nums[cur]) + dfs(mask | 1 << cur, cur) == res) {
+                        g(mask | 1 << cur, cur);
+                        break;
+                    }
+                }
+            }
+        };
+        g(1, 0);
+        return ans;
+    }
+};
 ```
 
 ```go
+func findPermutation(nums []int) (ans []int) {
+	n := len(nums)
+	f := make([][]int, 1<<n)
+	for i := range f {
+		f[i] = make([]int, n)
+		for j := range f[i] {
+			f[i][j] = -1
+		}
+	}
+	var dfs func(int, int) int
+	dfs = func(mask, pre int) int {
+		if mask == 1<<n-1 {
+			return abs(pre - nums[0])
+		}
+		if f[mask][pre] != -1 {
+			return f[mask][pre]
+		}
+		res := &f[mask][pre]
+		*res = math.MaxInt32
+		for cur := 1; cur < n; cur++ {
+			if mask>>cur&1 == 0 {
+				*res = min(*res, abs(pre-nums[cur])+dfs(mask|1<<cur, cur))
+			}
+		}
+		return *res
+	}
+	var g func(int, int)
+	g = func(mask, pre int) {
+		ans = append(ans, pre)
+		if mask == 1<<n-1 {
+			return
+		}
+		res := dfs(mask, pre)
+		for cur := 1; cur < n; cur++ {
+			if mask>>cur&1 == 0 {
+				if abs(pre-nums[cur])+dfs(mask|1<<cur, cur) == res {
+					g(mask|1<<cur, cur)
+					break
+				}
+			}
+		}
+	}
+	g(1, 0)
+	return
+}
+
+func abs(x int) int {
+	if x < 0 {
+		return -x
+	}
+	return x
+}
+```
 
+```ts
+function findPermutation(nums: number[]): number[] {
+    const n = nums.length;
+    const ans: number[] = [];
+    const f: number[][] = Array.from({ length: 1 << n }, () => Array(n).fill(-1));
+    const dfs = (mask: number, pre: number): number => {
+        if (mask === (1 << n) - 1) {
+            return Math.abs(pre - nums[0]);
+        }
+        if (f[mask][pre] !== -1) {
+            return f[mask][pre];
+        }
+        let res = Infinity;
+        for (let cur = 1; cur < n; ++cur) {
+            if (((mask >> cur) & 1) ^ 1) {
+                res = Math.min(res, Math.abs(pre - nums[cur]) + dfs(mask | (1 << cur), cur));
+            }
+        }
+        return (f[mask][pre] = res);
+    };
+    const g = (mask: number, pre: number) => {
+        ans.push(pre);
+        if (mask === (1 << n) - 1) {
+            return;
+        }
+        const res = dfs(mask, pre);
+        for (let cur = 1; cur < n; ++cur) {
+            if (((mask >> cur) & 1) ^ 1) {
+                if (Math.abs(pre - nums[cur]) + dfs(mask | (1 << cur), cur) === res) {
+                    g(mask | (1 << cur), cur);
+                    break;
+                }
+            }
+        }
+    };
+    g(1, 0);
+    return ans;
+}
 ```
 
 <!-- tabs:end -->
diff --git a/solution/3100-3199/3149.Find the Minimum Cost Array Permutation/Solution.cpp b/solution/3100-3199/3149.Find the Minimum Cost Array Permutation/Solution.cpp
new file mode 100644
index 0000000000000..79ff63d773209
--- /dev/null
+++ b/solution/3100-3199/3149.Find the Minimum Cost Array Permutation/Solution.cpp	
@@ -0,0 +1,42 @@
+class Solution {
+public:
+    vector<int> findPermutation(vector<int>& nums) {
+        int n = nums.size();
+        vector<int> ans;
+        int f[1 << n][n];
+        memset(f, -1, sizeof(f));
+        function<int(int, int)> dfs = [&](int mask, int pre) {
+            if (mask == (1 << n) - 1) {
+                return abs(pre - nums[0]);
+            }
+            int* res = &f[mask][pre];
+            if (*res != -1) {
+                return *res;
+            }
+            *res = INT_MAX;
+            for (int cur = 1; cur < n; ++cur) {
+                if (mask >> cur & 1 ^ 1) {
+                    *res = min(*res, abs(pre - nums[cur]) + dfs(mask | 1 << cur, cur));
+                }
+            }
+            return *res;
+        };
+        function<void(int, int)> g = [&](int mask, int pre) {
+            ans.push_back(pre);
+            if (mask == (1 << n) - 1) {
+                return;
+            }
+            int res = dfs(mask, pre);
+            for (int cur = 1; cur < n; ++cur) {
+                if (mask >> cur & 1 ^ 1) {
+                    if (abs(pre - nums[cur]) + dfs(mask | 1 << cur, cur) == res) {
+                        g(mask | 1 << cur, cur);
+                        break;
+                    }
+                }
+            }
+        };
+        g(1, 0);
+        return ans;
+    }
+};
\ No newline at end of file
diff --git a/solution/3100-3199/3149.Find the Minimum Cost Array Permutation/Solution.go b/solution/3100-3199/3149.Find the Minimum Cost Array Permutation/Solution.go
new file mode 100644
index 0000000000000..abc2986f1b6cb
--- /dev/null
+++ b/solution/3100-3199/3149.Find the Minimum Cost Array Permutation/Solution.go	
@@ -0,0 +1,52 @@
+func findPermutation(nums []int) (ans []int) {
+	n := len(nums)
+	f := make([][]int, 1<<n)
+	for i := range f {
+		f[i] = make([]int, n)
+		for j := range f[i] {
+			f[i][j] = -1
+		}
+	}
+	var dfs func(int, int) int
+	dfs = func(mask, pre int) int {
+		if mask == 1<<n-1 {
+			return abs(pre - nums[0])
+		}
+		if f[mask][pre] != -1 {
+			return f[mask][pre]
+		}
+		res := &f[mask][pre]
+		*res = math.MaxInt32
+		for cur := 1; cur < n; cur++ {
+			if mask>>cur&1 == 0 {
+				*res = min(*res, abs(pre-nums[cur])+dfs(mask|1<<cur, cur))
+			}
+		}
+		return *res
+	}
+	var g func(int, int)
+	g = func(mask, pre int) {
+		ans = append(ans, pre)
+		if mask == 1<<n-1 {
+			return
+		}
+		res := dfs(mask, pre)
+		for cur := 1; cur < n; cur++ {
+			if mask>>cur&1 == 0 {
+				if abs(pre-nums[cur])+dfs(mask|1<<cur, cur) == res {
+					g(mask|1<<cur, cur)
+					break
+				}
+			}
+		}
+	}
+	g(1, 0)
+	return
+}
+
+func abs(x int) int {
+	if x < 0 {
+		return -x
+	}
+	return x
+}
\ No newline at end of file
diff --git a/solution/3100-3199/3149.Find the Minimum Cost Array Permutation/Solution.java b/solution/3100-3199/3149.Find the Minimum Cost Array Permutation/Solution.java
new file mode 100644
index 0000000000000..d30a86bcbbd58
--- /dev/null
+++ b/solution/3100-3199/3149.Find the Minimum Cost Array Permutation/Solution.java	
@@ -0,0 +1,47 @@
+class Solution {
+    private Integer[][] f;
+    private int[] nums;
+    private int[] ans;
+    private int n;
+
+    public int[] findPermutation(int[] nums) {
+        n = nums.length;
+        ans = new int[n];
+        this.nums = nums;
+        f = new Integer[1 << n][n];
+        g(1, 0, 0);
+        return ans;
+    }
+
+    private int dfs(int mask, int pre) {
+        if (mask == (1 << n) - 1) {
+            return Math.abs(pre - nums[0]);
+        }
+        if (f[mask][pre] != null) {
+            return f[mask][pre];
+        }
+        int res = Integer.MAX_VALUE;
+        for (int cur = 1; cur < n; ++cur) {
+            if ((mask >> cur & 1) == 0) {
+                res = Math.min(res, Math.abs(pre - nums[cur]) + dfs(mask | 1 << cur, cur));
+            }
+        }
+        return f[mask][pre] = res;
+    }
+
+    private void g(int mask, int pre, int k) {
+        ans[k] = pre;
+        if (mask == (1 << n) - 1) {
+            return;
+        }
+        int res = dfs(mask, pre);
+        for (int cur = 1; cur < n; ++cur) {
+            if ((mask >> cur & 1) == 0) {
+                if (Math.abs(pre - nums[cur]) + dfs(mask | 1 << cur, cur) == res) {
+                    g(mask | 1 << cur, cur, k + 1);
+                    break;
+                }
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/solution/3100-3199/3149.Find the Minimum Cost Array Permutation/Solution.py b/solution/3100-3199/3149.Find the Minimum Cost Array Permutation/Solution.py
new file mode 100644
index 0000000000000..c2b3bb7b12bc4
--- /dev/null
+++ b/solution/3100-3199/3149.Find the Minimum Cost Array Permutation/Solution.py	
@@ -0,0 +1,27 @@
+class Solution:
+    def findPermutation(self, nums: List[int]) -> List[int]:
+        @cache
+        def dfs(mask: int, pre: int) -> int:
+            if mask == (1 << n) - 1:
+                return abs(pre - nums[0])
+            res = inf
+            for cur in range(1, n):
+                if mask >> cur & 1 ^ 1:
+                    res = min(res, abs(pre - nums[cur]) + dfs(mask | 1 << cur, cur))
+            return res
+
+        def g(mask: int, pre: int):
+            ans.append(pre)
+            if mask == (1 << n) - 1:
+                return
+            res = dfs(mask, pre)
+            for cur in range(1, n):
+                if mask >> cur & 1 ^ 1:
+                    if abs(pre - nums[cur]) + dfs(mask | 1 << cur, cur) == res:
+                        g(mask | 1 << cur, cur)
+                        break
+
+        n = len(nums)
+        ans = []
+        g(1, 0)
+        return ans
diff --git a/solution/3100-3199/3149.Find the Minimum Cost Array Permutation/Solution.ts b/solution/3100-3199/3149.Find the Minimum Cost Array Permutation/Solution.ts
new file mode 100644
index 0000000000000..9770825220bc0
--- /dev/null
+++ b/solution/3100-3199/3149.Find the Minimum Cost Array Permutation/Solution.ts	
@@ -0,0 +1,37 @@
+function findPermutation(nums: number[]): number[] {
+    const n = nums.length;
+    const ans: number[] = [];
+    const f: number[][] = Array.from({ length: 1 << n }, () => Array(n).fill(-1));
+    const dfs = (mask: number, pre: number): number => {
+        if (mask === (1 << n) - 1) {
+            return Math.abs(pre - nums[0]);
+        }
+        if (f[mask][pre] !== -1) {
+            return f[mask][pre];
+        }
+        let res = Infinity;
+        for (let cur = 1; cur < n; ++cur) {
+            if (((mask >> cur) & 1) ^ 1) {
+                res = Math.min(res, Math.abs(pre - nums[cur]) + dfs(mask | (1 << cur), cur));
+            }
+        }
+        return (f[mask][pre] = res);
+    };
+    const g = (mask: number, pre: number) => {
+        ans.push(pre);
+        if (mask === (1 << n) - 1) {
+            return;
+        }
+        const res = dfs(mask, pre);
+        for (let cur = 1; cur < n; ++cur) {
+            if (((mask >> cur) & 1) ^ 1) {
+                if (Math.abs(pre - nums[cur]) + dfs(mask | (1 << cur), cur) === res) {
+                    g(mask | (1 << cur), cur);
+                    break;
+                }
+            }
+        }
+    };
+    g(1, 0);
+    return ans;
+}

From 8f706c59b061641bebb5071647ddbe232d0fe9dd Mon Sep 17 00:00:00 2001
From: Libin YANG <contact@yanglibin.info>
Date: Mon, 13 May 2024 19:29:47 +0800
Subject: [PATCH 12/12] feat: add solutions to lc problem: No.3144 (#2810)

No.3144.Minimum Substring Partition of Equal Character Frequency
---
 .../README.md                                 | 182 +++++++++++++++++-
 .../README_EN.md                              | 182 +++++++++++++++++-
 .../Solution.cpp                              |  35 ++++
 .../Solution.go                               |  35 ++++
 .../Solution.java                             |  38 ++++
 .../Solution.py                               |  22 +++
 .../Solution.ts                               |  31 +++
 7 files changed, 517 insertions(+), 8 deletions(-)
 create mode 100644 solution/3100-3199/3144.Minimum Substring Partition of Equal Character Frequency/Solution.cpp
 create mode 100644 solution/3100-3199/3144.Minimum Substring Partition of Equal Character Frequency/Solution.go
 create mode 100644 solution/3100-3199/3144.Minimum Substring Partition of Equal Character Frequency/Solution.java
 create mode 100644 solution/3100-3199/3144.Minimum Substring Partition of Equal Character Frequency/Solution.py
 create mode 100644 solution/3100-3199/3144.Minimum Substring Partition of Equal Character Frequency/Solution.ts

diff --git a/solution/3100-3199/3144.Minimum Substring Partition of Equal Character Frequency/README.md b/solution/3100-3199/3144.Minimum Substring Partition of Equal Character Frequency/README.md
index 762d1c43eb9e7..c7ed12a5adbef 100644
--- a/solution/3100-3199/3144.Minimum Substring Partition of Equal Character Frequency/README.md	
+++ b/solution/3100-3199/3144.Minimum Substring Partition of Equal Character Frequency/README.md	
@@ -51,24 +51,198 @@
 
 ## 解法
 
-### 方法一
+### 方法一：记忆化搜索 + 哈希表
+
+我们设计一个函数 $\text{dfs}(i)$，表示从字符串 $s[i]$ 开始分割的最少子字符串数量。那么答案就是 $\text{dfs}(0)$。
+
+函数 $\text{dfs}(i)$ 的计算过程如下：
+
+如果 $i \geq n$，表示已经处理完了所有字符，返回 $0$。
+
+否则，我们维护一个哈希表 $\text{cnt}$，表示当前子字符串中每个字符出现的次数。另外，我们还维护一个哈希表 $\text{freq}$，表示每个字符出现的次数的频率。
+
+然后我们枚举 $j$ 从 $i$ 到 $n-1$，表示当前子字符串的结束位置。对于每个 $j$，我们更新 $\text{cnt}$ 和 $\text{freq}$，然后判断 $\text{freq}$ 的大小是否为 $1$，如果是的话，我们可以从 $j+1$ 开始分割，此时答案为 $1 + \text{dfs}(j+1)$，我们取所有 $j$ 中答案的最小值作为函数的返回值。
+
+为了避免重复计算，我们使用记忆化搜索。
+
+时间复杂度 $O(n^2)$，空间复杂度 $O(n)$。其中 $n$ 为字符串 $s$ 的长度。
 
 <!-- tabs:start -->
 
 ```python
-
+class Solution:
+    def minimumSubstringsInPartition(self, s: str) -> int:
+        @cache
+        def dfs(i: int) -> int:
+            if i >= n:
+                return 0
+            cnt = defaultdict(int)
+            freq = defaultdict(int)
+            ans = n - i
+            for j in range(i, n):
+                if cnt[s[j]]:
+                    freq[cnt[s[j]]] -= 1
+                    if not freq[cnt[s[j]]]:
+                        freq.pop(cnt[s[j]])
+                cnt[s[j]] += 1
+                freq[cnt[s[j]]] += 1
+                if len(freq) == 1 and (t := 1 + dfs(j + 1)) < ans:
+                    ans = t
+            return ans
+
+        n = len(s)
+        return dfs(0)
 ```
 
 ```java
-
+class Solution {
+    private int n;
+    private char[] s;
+    private Integer[] f;
+
+    public int minimumSubstringsInPartition(String s) {
+        n = s.length();
+        f = new Integer[n];
+        this.s = s.toCharArray();
+        return dfs(0);
+    }
+
+    private int dfs(int i) {
+        if (i >= n) {
+            return 0;
+        }
+        if (f[i] != null) {
+            return f[i];
+        }
+        int[] cnt = new int[26];
+        Map<Integer, Integer> freq = new HashMap<>(26);
+        int ans = n - i;
+        for (int j = i; j < n; ++j) {
+            int k = s[j] - 'a';
+            if (cnt[k] > 0) {
+                if (freq.merge(cnt[k], -1, Integer::sum) == 0) {
+                    freq.remove(cnt[k]);
+                }
+            }
+            ++cnt[k];
+            freq.merge(cnt[k], 1, Integer::sum);
+            if (freq.size() == 1) {
+                ans = Math.min(ans, 1 + dfs(j + 1));
+            }
+        }
+        return f[i] = ans;
+    }
+}
 ```
 
 ```cpp
-
+class Solution {
+public:
+    int minimumSubstringsInPartition(string s) {
+        int n = s.size();
+        int f[n];
+        memset(f, -1, sizeof(f));
+        function<int(int)> dfs = [&](int i) {
+            if (i >= n) {
+                return 0;
+            }
+            if (f[i] != -1) {
+                return f[i];
+            }
+            f[i] = n - i;
+            int cnt[26]{};
+            unordered_map<int, int> freq;
+            for (int j = i; j < n; ++j) {
+                int k = s[j] - 'a';
+                if (cnt[k]) {
+                    freq[cnt[k]]--;
+                    if (freq[cnt[k]] == 0) {
+                        freq.erase(cnt[k]);
+                    }
+                }
+                ++cnt[k];
+                ++freq[cnt[k]];
+                if (freq.size() == 1) {
+                    f[i] = min(f[i], 1 + dfs(j + 1));
+                }
+            }
+            return f[i];
+        };
+        return dfs(0);
+    }
+};
 ```
 
 ```go
+func minimumSubstringsInPartition(s string) int {
+	n := len(s)
+	f := make([]int, n)
+	for i := range f {
+		f[i] = -1
+	}
+	var dfs func(int) int
+	dfs = func(i int) int {
+		if i >= n {
+			return 0
+		}
+		if f[i] != -1 {
+			return f[i]
+		}
+		cnt := [26]int{}
+		freq := map[int]int{}
+		f[i] = n - i
+		for j := i; j < n; j++ {
+			k := int(s[j] - 'a')
+			if cnt[k] > 0 {
+				freq[cnt[k]]--
+				if freq[cnt[k]] == 0 {
+					delete(freq, cnt[k])
+				}
+			}
+			cnt[k]++
+			freq[cnt[k]]++
+			if len(freq) == 1 {
+				f[i] = min(f[i], 1+dfs(j+1))
+			}
+		}
+		return f[i]
+	}
+	return dfs(0)
+}
+```
 
+```ts
+function minimumSubstringsInPartition(s: string): number {
+    const n = s.length;
+    const f: number[] = Array(n).fill(-1);
+    const dfs = (i: number): number => {
+        if (i >= n) {
+            return 0;
+        }
+        if (f[i] !== -1) {
+            return f[i];
+        }
+        const cnt: Map<number, number> = new Map();
+        const freq: Map<number, number> = new Map();
+        f[i] = n - i;
+        for (let j = i; j < n; ++j) {
+            const k = s.charCodeAt(j) - 97;
+            if (freq.has(cnt.get(k)!)) {
+                freq.set(cnt.get(k)!, freq.get(cnt.get(k)!)! - 1);
+                if (freq.get(cnt.get(k)!) === 0) {
+                    freq.delete(cnt.get(k)!);
+                }
+            }
+            cnt.set(k, (cnt.get(k) || 0) + 1);
+            freq.set(cnt.get(k)!, (freq.get(cnt.get(k)!) || 0) + 1);
+            if (freq.size === 1) {
+                f[i] = Math.min(f[i], 1 + dfs(j + 1));
+            }
+        }
+        return f[i];
+    };
+    return dfs(0);
+}
 ```
 
 <!-- tabs:end -->
diff --git a/solution/3100-3199/3144.Minimum Substring Partition of Equal Character Frequency/README_EN.md b/solution/3100-3199/3144.Minimum Substring Partition of Equal Character Frequency/README_EN.md
index 5732ecea8ad2a..46896257b8971 100644
--- a/solution/3100-3199/3144.Minimum Substring Partition of Equal Character Frequency/README_EN.md	
+++ b/solution/3100-3199/3144.Minimum Substring Partition of Equal Character Frequency/README_EN.md	
@@ -47,24 +47,198 @@
 
 ## Solutions
 
-### Solution 1
+### Solution 1: Memoization Search + Hash Table
+
+We design a function $\text{dfs}(i)$, which represents the minimum number of substrings starting from the string $s[i]$. So the answer is $\text{dfs}(0)$.
+
+The calculation process of the function $\text{dfs}(i)$ is as follows:
+
+If $i \geq n$, it means that all characters have been processed, return $0$.
+
+Otherwise, we maintain a hash table $\text{cnt}$, which represents the number of occurrences of each character in the current substring. In addition, we also maintain a hash table $\text{freq}$, which represents the frequency of the number of occurrences of each character.
+
+Then we enumerate $j$ from $i$ to $n-1$, which represents the end position of the current substring. For each $j$, we update $\text{cnt}$ and $\text{freq}$, then check whether the size of $\text{freq}$ is $1$. If so, we can start splitting from $j+1$, at this time the answer is $1 + \text{dfs}(j+1)$. We take the minimum value of the answer among all $j$ as the return value of the function.
+
+To avoid repeated calculations, we use memoization search.
+
+The time complexity is $O(n^2)$, and the space complexity is $O(n)$. Where $n$ is the length of the string $s$.
 
 <!-- tabs:start -->
 
 ```python
-
+class Solution:
+    def minimumSubstringsInPartition(self, s: str) -> int:
+        @cache
+        def dfs(i: int) -> int:
+            if i >= n:
+                return 0
+            cnt = defaultdict(int)
+            freq = defaultdict(int)
+            ans = n - i
+            for j in range(i, n):
+                if cnt[s[j]]:
+                    freq[cnt[s[j]]] -= 1
+                    if not freq[cnt[s[j]]]:
+                        freq.pop(cnt[s[j]])
+                cnt[s[j]] += 1
+                freq[cnt[s[j]]] += 1
+                if len(freq) == 1 and (t := 1 + dfs(j + 1)) < ans:
+                    ans = t
+            return ans
+
+        n = len(s)
+        return dfs(0)
 ```
 
 ```java
-
+class Solution {
+    private int n;
+    private char[] s;
+    private Integer[] f;
+
+    public int minimumSubstringsInPartition(String s) {
+        n = s.length();
+        f = new Integer[n];
+        this.s = s.toCharArray();
+        return dfs(0);
+    }
+
+    private int dfs(int i) {
+        if (i >= n) {
+            return 0;
+        }
+        if (f[i] != null) {
+            return f[i];
+        }
+        int[] cnt = new int[26];
+        Map<Integer, Integer> freq = new HashMap<>(26);
+        int ans = n - i;
+        for (int j = i; j < n; ++j) {
+            int k = s[j] - 'a';
+            if (cnt[k] > 0) {
+                if (freq.merge(cnt[k], -1, Integer::sum) == 0) {
+                    freq.remove(cnt[k]);
+                }
+            }
+            ++cnt[k];
+            freq.merge(cnt[k], 1, Integer::sum);
+            if (freq.size() == 1) {
+                ans = Math.min(ans, 1 + dfs(j + 1));
+            }
+        }
+        return f[i] = ans;
+    }
+}
 ```
 
 ```cpp
-
+class Solution {
+public:
+    int minimumSubstringsInPartition(string s) {
+        int n = s.size();
+        int f[n];
+        memset(f, -1, sizeof(f));
+        function<int(int)> dfs = [&](int i) {
+            if (i >= n) {
+                return 0;
+            }
+            if (f[i] != -1) {
+                return f[i];
+            }
+            f[i] = n - i;
+            int cnt[26]{};
+            unordered_map<int, int> freq;
+            for (int j = i; j < n; ++j) {
+                int k = s[j] - 'a';
+                if (cnt[k]) {
+                    freq[cnt[k]]--;
+                    if (freq[cnt[k]] == 0) {
+                        freq.erase(cnt[k]);
+                    }
+                }
+                ++cnt[k];
+                ++freq[cnt[k]];
+                if (freq.size() == 1) {
+                    f[i] = min(f[i], 1 + dfs(j + 1));
+                }
+            }
+            return f[i];
+        };
+        return dfs(0);
+    }
+};
 ```
 
 ```go
+func minimumSubstringsInPartition(s string) int {
+	n := len(s)
+	f := make([]int, n)
+	for i := range f {
+		f[i] = -1
+	}
+	var dfs func(int) int
+	dfs = func(i int) int {
+		if i >= n {
+			return 0
+		}
+		if f[i] != -1 {
+			return f[i]
+		}
+		cnt := [26]int{}
+		freq := map[int]int{}
+		f[i] = n - i
+		for j := i; j < n; j++ {
+			k := int(s[j] - 'a')
+			if cnt[k] > 0 {
+				freq[cnt[k]]--
+				if freq[cnt[k]] == 0 {
+					delete(freq, cnt[k])
+				}
+			}
+			cnt[k]++
+			freq[cnt[k]]++
+			if len(freq) == 1 {
+				f[i] = min(f[i], 1+dfs(j+1))
+			}
+		}
+		return f[i]
+	}
+	return dfs(0)
+}
+```
 
+```ts
+function minimumSubstringsInPartition(s: string): number {
+    const n = s.length;
+    const f: number[] = Array(n).fill(-1);
+    const dfs = (i: number): number => {
+        if (i >= n) {
+            return 0;
+        }
+        if (f[i] !== -1) {
+            return f[i];
+        }
+        const cnt: Map<number, number> = new Map();
+        const freq: Map<number, number> = new Map();
+        f[i] = n - i;
+        for (let j = i; j < n; ++j) {
+            const k = s.charCodeAt(j) - 97;
+            if (freq.has(cnt.get(k)!)) {
+                freq.set(cnt.get(k)!, freq.get(cnt.get(k)!)! - 1);
+                if (freq.get(cnt.get(k)!) === 0) {
+                    freq.delete(cnt.get(k)!);
+                }
+            }
+            cnt.set(k, (cnt.get(k) || 0) + 1);
+            freq.set(cnt.get(k)!, (freq.get(cnt.get(k)!) || 0) + 1);
+            if (freq.size === 1) {
+                f[i] = Math.min(f[i], 1 + dfs(j + 1));
+            }
+        }
+        return f[i];
+    };
+    return dfs(0);
+}
 ```
 
 <!-- tabs:end -->
diff --git a/solution/3100-3199/3144.Minimum Substring Partition of Equal Character Frequency/Solution.cpp b/solution/3100-3199/3144.Minimum Substring Partition of Equal Character Frequency/Solution.cpp
new file mode 100644
index 0000000000000..24042931571ac
--- /dev/null
+++ b/solution/3100-3199/3144.Minimum Substring Partition of Equal Character Frequency/Solution.cpp	
@@ -0,0 +1,35 @@
+class Solution {
+public:
+    int minimumSubstringsInPartition(string s) {
+        int n = s.size();
+        int f[n];
+        memset(f, -1, sizeof(f));
+        function<int(int)> dfs = [&](int i) {
+            if (i >= n) {
+                return 0;
+            }
+            if (f[i] != -1) {
+                return f[i];
+            }
+            f[i] = n - i;
+            int cnt[26]{};
+            unordered_map<int, int> freq;
+            for (int j = i; j < n; ++j) {
+                int k = s[j] - 'a';
+                if (cnt[k]) {
+                    freq[cnt[k]]--;
+                    if (freq[cnt[k]] == 0) {
+                        freq.erase(cnt[k]);
+                    }
+                }
+                ++cnt[k];
+                ++freq[cnt[k]];
+                if (freq.size() == 1) {
+                    f[i] = min(f[i], 1 + dfs(j + 1));
+                }
+            }
+            return f[i];
+        };
+        return dfs(0);
+    }
+};
\ No newline at end of file
diff --git a/solution/3100-3199/3144.Minimum Substring Partition of Equal Character Frequency/Solution.go b/solution/3100-3199/3144.Minimum Substring Partition of Equal Character Frequency/Solution.go
new file mode 100644
index 0000000000000..ff4f36ae9a605
--- /dev/null
+++ b/solution/3100-3199/3144.Minimum Substring Partition of Equal Character Frequency/Solution.go	
@@ -0,0 +1,35 @@
+func minimumSubstringsInPartition(s string) int {
+	n := len(s)
+	f := make([]int, n)
+	for i := range f {
+		f[i] = -1
+	}
+	var dfs func(int) int
+	dfs = func(i int) int {
+		if i >= n {
+			return 0
+		}
+		if f[i] != -1 {
+			return f[i]
+		}
+		cnt := [26]int{}
+		freq := map[int]int{}
+		f[i] = n - i
+		for j := i; j < n; j++ {
+			k := int(s[j] - 'a')
+			if cnt[k] > 0 {
+				freq[cnt[k]]--
+				if freq[cnt[k]] == 0 {
+					delete(freq, cnt[k])
+				}
+			}
+			cnt[k]++
+			freq[cnt[k]]++
+			if len(freq) == 1 {
+				f[i] = min(f[i], 1+dfs(j+1))
+			}
+		}
+		return f[i]
+	}
+	return dfs(0)
+}
\ No newline at end of file
diff --git a/solution/3100-3199/3144.Minimum Substring Partition of Equal Character Frequency/Solution.java b/solution/3100-3199/3144.Minimum Substring Partition of Equal Character Frequency/Solution.java
new file mode 100644
index 0000000000000..fd33006675692
--- /dev/null
+++ b/solution/3100-3199/3144.Minimum Substring Partition of Equal Character Frequency/Solution.java	
@@ -0,0 +1,38 @@
+class Solution {
+    private int n;
+    private char[] s;
+    private Integer[] f;
+
+    public int minimumSubstringsInPartition(String s) {
+        n = s.length();
+        f = new Integer[n];
+        this.s = s.toCharArray();
+        return dfs(0);
+    }
+
+    private int dfs(int i) {
+        if (i >= n) {
+            return 0;
+        }
+        if (f[i] != null) {
+            return f[i];
+        }
+        int[] cnt = new int[26];
+        Map<Integer, Integer> freq = new HashMap<>(26);
+        int ans = n - i;
+        for (int j = i; j < n; ++j) {
+            int k = s[j] - 'a';
+            if (cnt[k] > 0) {
+                if (freq.merge(cnt[k], -1, Integer::sum) == 0) {
+                    freq.remove(cnt[k]);
+                }
+            }
+            ++cnt[k];
+            freq.merge(cnt[k], 1, Integer::sum);
+            if (freq.size() == 1) {
+                ans = Math.min(ans, 1 + dfs(j + 1));
+            }
+        }
+        return f[i] = ans;
+    }
+}
\ No newline at end of file
diff --git a/solution/3100-3199/3144.Minimum Substring Partition of Equal Character Frequency/Solution.py b/solution/3100-3199/3144.Minimum Substring Partition of Equal Character Frequency/Solution.py
new file mode 100644
index 0000000000000..6287c7b32862a
--- /dev/null
+++ b/solution/3100-3199/3144.Minimum Substring Partition of Equal Character Frequency/Solution.py	
@@ -0,0 +1,22 @@
+class Solution:
+    def minimumSubstringsInPartition(self, s: str) -> int:
+        @cache
+        def dfs(i: int) -> int:
+            if i >= n:
+                return 0
+            cnt = defaultdict(int)
+            freq = defaultdict(int)
+            ans = n - i
+            for j in range(i, n):
+                if cnt[s[j]]:
+                    freq[cnt[s[j]]] -= 1
+                    if not freq[cnt[s[j]]]:
+                        freq.pop(cnt[s[j]])
+                cnt[s[j]] += 1
+                freq[cnt[s[j]]] += 1
+                if len(freq) == 1 and (t := 1 + dfs(j + 1)) < ans:
+                    ans = t
+            return ans
+
+        n = len(s)
+        return dfs(0)
diff --git a/solution/3100-3199/3144.Minimum Substring Partition of Equal Character Frequency/Solution.ts b/solution/3100-3199/3144.Minimum Substring Partition of Equal Character Frequency/Solution.ts
new file mode 100644
index 0000000000000..6edde5c315699
--- /dev/null
+++ b/solution/3100-3199/3144.Minimum Substring Partition of Equal Character Frequency/Solution.ts	
@@ -0,0 +1,31 @@
+function minimumSubstringsInPartition(s: string): number {
+    const n = s.length;
+    const f: number[] = Array(n).fill(-1);
+    const dfs = (i: number): number => {
+        if (i >= n) {
+            return 0;
+        }
+        if (f[i] !== -1) {
+            return f[i];
+        }
+        const cnt: Map<number, number> = new Map();
+        const freq: Map<number, number> = new Map();
+        f[i] = n - i;
+        for (let j = i; j < n; ++j) {
+            const k = s.charCodeAt(j) - 97;
+            if (freq.has(cnt.get(k)!)) {
+                freq.set(cnt.get(k)!, freq.get(cnt.get(k)!)! - 1);
+                if (freq.get(cnt.get(k)!) === 0) {
+                    freq.delete(cnt.get(k)!);
+                }
+            }
+            cnt.set(k, (cnt.get(k) || 0) + 1);
+            freq.set(cnt.get(k)!, (freq.get(cnt.get(k)!) || 0) + 1);
+            if (freq.size === 1) {
+                f[i] = Math.min(f[i], 1 + dfs(j + 1));
+            }
+        }
+        return f[i];
+    };
+    return dfs(0);
+}