@[jzdywf](/user/138799) change 里面 ```x = fa[fx]```
```tree[k].sum+=(tree[k].right-tree[k].left+1)*d;```
改为 ```tree[k].sum+=1ll*(tree[k].right-tree[k].left+1)*d;```
by 伟大的王夫子 @ 2022-02-08 12:47:07
@[伟大的王夫子](/user/162196) 过了,谢谢大佬!
by jzdywf @ 2022-02-08 14:34:24