@[Andy_2006](/user/261262) if(tree[i].l>=r&&tree[i].r<=r)?????
by ker_xyxyxyx_xxs @ 2021-09-05 14:49:34
```
if(tree[i].l>=r&&tree[i].r<=r)
return tree[i].w;
```
by MatrixCascade @ 2021-09-05 14:50:37
@[ker_xyxyxyx_xxs](/user/335477) 判断这个点所代表的区间是不是全部在查找区间内
by WaltVBAlston @ 2021-09-05 14:51:10
@[Andy_2006](/user/261262) 但是你这是判断是不是一个点。。。
by ker_xyxyxyx_xxs @ 2021-09-05 14:51:35
@[Andy_2006](/user/261262) 你两个都写了r
by MatrixCascade @ 2021-09-05 14:51:59
@[ker_xyxyxyx_xxs](/user/335477) @[MatrixCascade](/user/154101)
我是个sb
by WaltVBAlston @ 2021-09-05 14:52:04
@[ker_xyxyxyx_xxs](/user/335477) @[MatrixCascade](/user/154101) 但是改了之后不死循环了，可是输出还是不对
by WaltVBAlston @ 2021-09-05 14:52:48
@[Andy_2006](/user/261262) k*(l-r+1)？？？
by ker_xyxyxyx_xxs @ 2021-09-05 14:53:43
建议认真阅读题解。。。
by ker_xyxyxyx_xxs @ 2021-09-05 14:54:10
@[Andy_2006](/user/261262) 你 update 的时候 pushup 了吗
by MatrixCascade @ 2021-09-05 14:54:23