后3题为提高题,选做。
| RunID | User | Nick Name | Problem ID | Result | Memory | Time | Language | Code Length | Submit Time | 
| 31407 | caijiaying207 | Accepted | 2080 KiB  | 0 ms  | C++ | 216 bytes | 2019-12-31 16:04:50 | ||
| 31370 | caijiaying207 | Accepted | 2080 KiB  | 0 ms  | C++ | 163 bytes | 2019-12-31 15:57:47 | ||
| 31332 | caijiaying207 | Accepted | 2080 KiB  | 0 ms  | C++ | 154 bytes | 2019-12-31 15:53:44 | ||
| 31316 | caijiaying207 | Presentation Error | 2080 KiB  | 0 ms  | C++ | 157 bytes | 2019-12-31 15:52:28 | ||
| 31301 | caijiaying207 | Presentation Error | 2080 KiB  | 0 ms  | C++ | 151 bytes | 2019-12-31 15:51:15 | ||
| 31296 | caijiaying207 | Wrong Answer | 2080 KiB  | 0 ms  | C++ | 150 bytes | 2019-12-31 15:50:14 |