怀疑是find有问题,~~但是我没有证据~~
试试这个：
```cpp
int find(int x)
{
if(pre[x]==x) return x;
return pre[x]=find(pre[x);
}
```cpp
by Tan_Wei_Ye @ 2021-01-26 13:12:59
@Tan_Wei_Ye试过了，仍是TLE
by Lamorak @ 2021-01-26 14:16:28
@[UKE_](/user/307826) 你的数组大小......
by QwQ__ @ 2021-08-02 14:34:26
会不会太大了
by QwQ__ @ 2021-08-02 14:35:23
加快读
by mtc123456 @ 2021-08-26 17:02:24