能看到吧(
```plain
9 9 2
2
1
8
7
7
6
7
8
10
2 1
1 7
3 2
4 3
5 4
5 6
6 7
4 8
2 9
C 2 4
A 4 3
```
正确输出:
```plain
2
```
by _5011_ @ 2020-07-24 21:09:21
@[Zephyr_](/user/91127) 恩。。。他输出都没。。。
估计是multiest没查找到
by Prean @ 2020-07-24 21:12:11
@[Zephyr_](/user/91127) 过去啦,谢谢ClCN姐姐/qq
by Prean @ 2020-07-24 21:31:55