vivo50包你过
by 糯米w @ 2024-01-28 13:02:38
```cpp
if(dep[fa[x][k]]>dep[y]) x=fa[x][k];
```
应改为
```cpp
if(dep[fa[x][k]]>=dep[y]) x=fa[x][k];
```
by hcy1117 @ 2024-01-31 11:02:24
还有您的fa数组的初始化没写吧
by hcy1117 @ 2024-01-31 13:11:16