@[wxzzzz](/user/749630)
by ACPC @ 2024-02-04 09:52:38
倒数第 $6$ 行的
```cpp
root[cnt]=root[cnt-1];
```
改成
```cpp
root[cnt]=root[v]
```
by wxzzzz @ 2024-02-04 09:59:54
@[lovely_rex](/user/704234)
by wxzzzz @ 2024-02-04 10:00:12
@[wxzzzz](/user/749630) tql我正好也错这了！
by hzy99999 @ 2024-02-04 10:03:21
@[wxzzzz](/user/749630) %%%%%
by Rex_Cat @ 2024-02-04 10:10:03