update readme

Author: hogan-tech

.github/Question List.txt

@@ -1,3 +1,5 @@
 2044-count-number-of-maximum-bitwise-or-subsets python medium
 1545-find-kth-bit-in-nth-binary-string python medium
-1092-shortest-common-supersequence python hard
+1092-shortest-common-supersequence python hard
+3324-find-the-sequence-of-strings-appeared-on-the-screen python medium
+3325-count-substrings-with-k-frequency-characters-i python medium

README.md

@@ -928,6 +928,8 @@ The solutions are organized as follows:
 | 3315 | [Construct the Minimum Bitwise Array II](https://leetcode.com/problems/construct-the-minimum-bitwise-array-ii/)                                                                           | [Python](./3315-construct-the-minimum-bitwise-array-ii/3315-construct-the-minimum-bitwise-array-ii.py)                                                                                                                                                                         | [Medium](./3315-construct-the-minimum-bitwise-array-ii/README.md)                                      |
 | 3318 | [Find X Sum of All K Long Subarrays I](https://leetcode.com/problems/find-x-sum-of-all-k-long-subarrays-i/)                                                                               | [Python](./3318-find-x-sum-of-all-k-long-subarrays-i/3318-find-x-sum-of-all-k-long-subarrays-i.py)                                                                                                                                                                             | [Easy](./3318-find-x-sum-of-all-k-long-subarrays-i/README.md)                                          |
 | 3319 | [K-th Largest Perfect Subtree Size in Binary Tree](https://leetcode.com/problems/k-th-largest-perfect-subtree-size-in-binary-tree/)                                                       | [Python](./3319-k-th-largest-perfect-subtree-size-in-binary-tree/3319-k-th-largest-perfect-subtree-size-in-binary-tree.py)                                                                                                                                                     | [Medium](./3319-k-th-largest-perfect-subtree-size-in-binary-tree/README.md)                            |
+| 3324 | [Find the Sequence of Strings Appeared on the Screen](https://leetcode.com/problems/find-the-sequence-of-strings-appeared-on-the-screen)                                                  | [Python](./3324-find-the-sequence-of-strings-appeared-on-the-screen/3324-find-the-sequence-of-strings-appeared-on-the-screen.py)                                                                                                                                               | [Medium](./3324-find-the-sequence-of-strings-appeared-on-the-screen/README.md)                         |
+| 3325 | [Count Substrings with K Frequency Characters I](https://leetcode.com/problems/count-substrings-with-k-frequency-characters-i)                                                            | [Python](./3325-count-substrings-with-k-frequency-characters-i/3325-count-substrings-with-k-frequency-characters-i.py)                                                                                                                                                         | [Medium](./3325-count-substrings-with-k-frequency-characters-i/README.md)                              |
 
 ## How to Use