后3题为提高题,选做。
| RunID | User | Nick Name | Problem ID | Result | Memory | Time | Language | Code Length | Submit Time | 
| 31487 | chengchunhe207 | Wrong Answer | 2080 KiB  | 1 ms  | C++ | 363 bytes | 2019-12-31 16:20:44 | ||
| 31452 | chengchunhe207 | Wrong Answer | 2080 KiB  | 1 ms  | C++ | 340 bytes | 2019-12-31 16:14:15 | ||
| 31443 | chengchunhe207 | Accepted | 2080 KiB  | 0 ms  | C++ | 147 bytes | 2019-12-31 16:11:48 | ||
| 31435 | chengchunhe207 | Presentation Error | 2080 KiB  | 0 ms  | C++ | 159 bytes | 2019-12-31 16:09:36 | ||
| 31410 | chengchunhe207 | Presentation Error | 2080 KiB  | 0 ms  | C++ | 192 bytes | 2019-12-31 16:05:03 | ||
| 31369 | chengchunhe207 | Presentation Error | 2080 KiB  | 0 ms  | C++ | 192 bytes | 2019-12-31 15:57:46 | ||
| 31344 | chengchunhe207 | Presentation Error | 2080 KiB  | 0 ms  | C++ | 202 bytes | 2019-12-31 15:54:53 | ||
| 31313 | chengchunhe207 | Presentation Error | 2080 KiB  | 0 ms  | C++ | 226 bytes | 2019-12-31 15:52:17 |