| Problem ID | Title | Solved | Submit | 正确率 |
|---|---|---|---|---|
| 4415 | Clean M | 11 | 34 | 32.353% |
| 4420 | Average of Two Numbers | 16 | 46 | 34.783% |
| 4429 | 2020 | 5 | 9 | 55.556% |
| 4430 | 2020 vs 2018 | 5 | 9 | 55.556% |
| 4440 | Line | 18 | 45 | 40.000% |
| 4442 | 构造 | 16 | 61 | 26.230% |
| 4473 | 两个素数 | 35 | 57 | 61.404% |
| 4507 | 整数拼接 | 4 | 10 | 40.000% |
| 4528 | 修剪灌木 | 13 | 18 | 72.222% |
| 4530 | 统计子矩阵 | 34 | 106 | 32.075% |
| 4614 | 递归实现指数型枚举 | 2 | 14 | 14.286% |
| 4615 | 递归／非递归实现组合型枚举 | 2 | 3 | 66.667% |
| 4616 | 递归实现排列型枚举 | 2 | 5 | 40.000% |