@[tamamocross](/user/754444)
```cpp
if(r>=Tree[(i<<1)+1].left){
s+=Search((i<<1)+1,l,r);
}
```
by LUlululu1616 @ 2022-12-01 17:59:22
@[LUlululu1616](/user/671774)
之前忘说错因了，是RE，按照您说的方法改了还是RE
by tamamocross @ 2022-12-01 18:54:53
@[tamamocross](/user/754444)
把
```cpp
int mid=l+((r-l)>>2);//除2
```
改成
```cpp
int mid=(l+r)>>1;//除2
```
就行
by z_y_ @ 2022-12-01 19:00:25
@[z_y_](/user/556472)
谢谢大佬orz，过了
by tamamocross @ 2022-12-01 22:01:45