后3题为提高题,选做。
| RunID | User | Nick Name | Problem ID | Result | Memory | Time | Language | Code Length | Submit Time | 
| 31262 | 208chenjinxin | Accepted | 2080 KiB  | 0 ms  | C++ | 149 bytes | 2019-12-31 15:36:28 | ||
| 31244 | 208chenjinxin | Wrong Answer | 2080 KiB  | 0 ms  | C++ | 185 bytes | 2019-12-31 15:33:42 | ||
| 31150 | 208chenjinxin | Accepted | 2080 KiB  | 0 ms  | C++ | 153 bytes | 2019-12-31 15:13:39 | ||
| 31141 | 208chenjinxin | Presentation Error | 2080 KiB  | 0 ms  | C++ | 165 bytes | 2019-12-31 15:12:24 | ||
| 31129 | 208chenjinxin | Wrong Answer | 2080 KiB  | 0 ms  | C++ | 231 bytes | 2019-12-31 15:09:58 | ||
| 31106 | 208chenjinxin | Wrong Answer | 2080 KiB  | 0 ms  | C++ | 273 bytes | 2019-12-31 15:06:02 |