@[rkbudlo](/space/show?uid=41834) @[哔哩哔哩](/space/show?uid=41868) @[DavidJing](/space/show?uid=41855) @[ADMAN](/space/show?uid=41748)
by xzjds @ 2018-10-22 19:45:29
靠，玄学 感觉不应该爆MLE啊
by 哔哩哔哩 @ 2018-10-22 19:47:57
？？？ 之前AC的代码WA了
by 哔哩哔哩 @ 2018-10-22 19:49:33
@[xzjds](/space/show?uid=42217)
路径压缩应该这么写
```cpp
int getfa(int x)
{
if(fa[x]!=x) fa[x]=getfa(fa[x]);
return fa[x];
}
```
by RiverFun @ 2018-10-22 19:52:24
@[哔哩哔哩](/space/show?uid=41868)
ta路径压缩写错了
by RiverFun @ 2018-10-22 19:53:52
@[Steve_braveman](/space/show?uid=96570)
我居然犯了这么愚蠢的错误。。
by xzjds @ 2018-10-22 19:54:18
@[xzjds](/space/show?uid=42217) 大佬您的getfa打错了
by Aryzec @ 2018-10-22 19:54:35
@[rkbudlo](/space/show?uid=41834)
水过了。。
by xzjds @ 2018-10-22 19:55:08
嘤，我喜欢
```
inline int getfa(int x){
while(x!=fa[x]) x=fa[x]=fa[fa[x]];
return x;
}
```
by 哔哩哔哩 @ 2018-10-22 19:55:49
@[xzjds](/space/show?uid=42217) 您强
by Aryzec @ 2018-10-22 20:17:41