variable array hackerrank

Author: sauravjaiswalsj

hackerrank/cpp/practice/arrays.cpp

@@ -0,0 +1,53 @@
+#include<bits/stdc++.h>
+using std::cin;
+using std::cout;
+using std::vector;
+using std::string;
+using std::endl;
+/*******  All Required define Pre-Processors and typedef Constants *******/
+#define SCD(t) scanf("%d",&t)
+#define SCLD(t) scanf("%ld",&t)
+#define SCLLD(t) scanf("%lld",&t)
+#define SCC(t) scanf("%c",&t)
+#define SCS(t) scanf("%s",t)
+#define SCF(t) scanf("%f",&t)
+#define SCLF(t) scanf("%lf",&t)
+#define MEM(a, b) memset(a, (b), sizeof(a))
+#define FOR(i, j, k, in) for (int i=j ; i<k ; i+=in)
+#define RFOR(i, j, k, in) for (int i=j ; i>=k ; i-=in)
+#define REP(i, j) FOR(i, 0, j, 1)
+#define RREP(i, j) RFOR(i, j, 0, 1)
+#define all(cont) cont.begin(), cont.end()
+#define rall(cont) cont.end(), cont.begin()
+#define FOREACH(it, l) for (auto it = l.begin(); it != l.end(); it++)
+#define IN(A, B, C) assert( B <= A && A <= C)
+#define MP make_pair
+#define PB push_back
+#define INF (int)1e9
+#define EPS 1e-9
+#define PI 3.1415926535897932384626433832795
+#define MOD 1000000007
+#define read(type) readInt<type>()
+const double pi=acos(-1.0);
+typedef long int int32;
+typedef unsigned long int uint32;
+typedef long long int int64;
+typedef unsigned long long int  uint64;
+
+
+int main(void){
+	
+	//Type your code here
+	int n,k; 
+	scanf("%d",&n);
+	vector<int> arr;
+	for(int i=0;i<n;i++){
+		SCD(k);
+		arr.push_back(k);
+	}
+	for(int i=n-1;i>=0;i--){
+		cout<<arr.at(i)<<" ";
+	}
+	return 0;
+}
+

hackerrank/cpp/practice/v-array

@@ -0,0 +1,63 @@
+#include<bits/stdc++.h>
+using std::cin;
+using std::cout;
+using std::vector;
+using std::string;
+using std::endl;
+/*******  All Required define Pre-Processors and typedef Constants *******/
+#define SCD(t) scanf("%d",&t)
+#define SCLD(t) scanf("%ld",&t)
+#define SCLLD(t) scanf("%lld",&t)
+#define SCC(t) scanf("%c",&t)
+#define SCS(t) scanf("%s",t)
+#define SCF(t) scanf("%f",&t)
+#define SCLF(t) scanf("%lf",&t)
+#define MEM(a, b) memset(a, (b), sizeof(a))
+#define FOR(i, j, k, in) for (int i=j ; i<k ; i+=in)
+#define RFOR(i, j, k, in) for (int i=j ; i>=k ; i-=in)
+#define REP(i, j) FOR(i, 0, j, 1)
+#define RREP(i, j) RFOR(i, j, 0, 1)
+#define all(cont) cont.begin(), cont.end()
+#define rall(cont) cont.end(), cont.begin()
+#define FOREACH(it, l) for (auto it = l.begin(); it != l.end(); it++)
+#define IN(A, B, C) assert( B <= A && A <= C)
+#define MP make_pair
+#define PB push_back
+#define INF (int)1e9
+#define EPS 1e-9
+#define PI 3.1415926535897932384626433832795
+#define MOD 1000000007
+#define read(type) readInt<type>()
+const double pi=acos(-1.0);
+typedef long int int32;
+typedef unsigned long int uint32;
+typedef long long int int64;
+typedef unsigned long long int  uint64;
+
+
+int main(void){
+	
+	//Type your code here
+	int n,q;
+	scanf("%d%d",&n,&q);
+	int **arr=new int*[n];
+	for(int i=0;i<n;i++){
+		int k;
+		scanf("%d",&k);
+		arr[i]=new int[k];
+		for(int j=0;j<k;j++){
+			int x;
+			scanf("%d",&x);
+			arr[i][j]=x;
+		}
+	}
+	//print
+	for(int i=0;i<q;i++){
+		int a,b;
+		cin>>a>>b;
+		cout<<arr[a][b]<<endl;
+	}
+
+	return 0;
+}
+