@[Sheez](/user/939998) hack 数据：
```
8 4
1 2 1
1 3 1
2 4 1
3 5 1
3 6 1
4 7 1
4 8 1
5
3
2
7
```
by QAQ__ @ 2023-05-17 08:26:26
@[Sheez](/user/939998) 你 dfn 和 nfd 写反了。。改了就过了。。
by QAQ__ @ 2023-05-17 09:08:34
@[QAQ__](/user/627636) 谢谢/bx
by Sheez @ 2023-05-17 11:40:46