| 题目ID | 题目标题 | 通过人数/提交人数 | 通过人数 / 提交总次数 |
| 4164 | Who hasn't sign up | 1 / 1 | 1 / 2 |
| 4165 | DS = Data structure of Shawn's | 0 / 0 | 0 / 0 |
| 4166 | Find Good Reverse Tuple | 0 / 0 | 0 / 0 |
| 4167 | Nero's Key Board | 0 / 0 | 0 / 0 |
| 4168 | Longest Increasing Subsequence in a matrix - Easy | 0 / 0 | 0 / 0 |
| 4169 | Weidong's minimum working hours | 0 / 0 | 0 / 0 |
| 4171 | Optimization on matrices multiplication | 1 / 1 | 1 / 2 |
| 4172 | Longest Increasing Subsequence in a matrix - Hard | 0 / 0 | 0 / 0 |
| 4173 | Minimal edit distance to a string's prefix | 0 / 0 | 0 / 0 |