```cpp
ans=min(ans,query(id[x]+1,id[y],1,n,1));
```
改成
```cpp
if (id[x]!=id[y]) ans=min(ans,query(id[x]+1,id[y],1,n,1));
```
by Llf0703 @ 2019-05-01 12:28:08
@[Hale](/space/show?uid=74900)
by Llf0703 @ 2019-05-01 12:28:16
@[Hale](/space/show?uid=74900) ~~本蒟蒻：我看您开了一堆数组，怎么可能不被MLE呢……~~
by CHENRUIJIE @ 2019-05-01 12:50:24
@[Hale](/space/show?uid=74900) Orz树剖
by Kubic @ 2019-05-01 13:16:34
@[CHENRUIJIE](/space/show?uid=108875) 树刨就得开一堆数组啊
by Hale @ 2019-05-01 20:11:34
@[Llf0703](/space/show?uid=29696) 好的好的，改过来了，谢谢大佬
ORZ
by Hale @ 2019-05-01 20:11:54
@[Hale](/space/show?uid=74900) TQL
by CHENRUIJIE @ 2019-05-01 20:41:24