后3题为提高题,选做。
| RunID | User | Nick Name | Problem ID | Result | Memory | Time | Language | Code Length | Submit Time | 
| 31896 | 212panyanxi | Accepted | 2080 KiB  | 0 ms  | C++ | 221 bytes | 2020-01-02 15:33:55 | ||
| 31859 | 212panyanxi | Wrong Answer | 2080 KiB  | 0 ms  | C++ | 306 bytes | 2020-01-02 15:21:27 | ||
| 31790 | 212panyanxi | Accepted | 2080 KiB  | 0 ms  | C++ | 155 bytes | 2020-01-02 15:07:33 | ||
| 31772 | 212panyanxi | Presentation Error | 2080 KiB  | 0 ms  | C++ | 155 bytes | 2020-01-02 15:05:23 | ||
| 31754 | 212panyanxi | Presentation Error | 2080 KiB  | 0 ms  | C++ | 146 bytes | 2020-01-02 15:03:47 |