[测评记录](https://www.luogu.com.cn/record/57649552)
by tzyt @ 2021-09-07 22:04:48
艹，破案了
```cpp
if (dep[chain_top[node1] < dep[chain_top[node2]]])
{
swap(node1, node2);
}
```
现在看里面那几个数组的括号我自己都想笑。。。关键打成这样编译的时候还不会报错，真的找了我好久
by tzyt @ 2021-09-08 03:27:00