将
```cpp
update(1,1,n,x,y,k);
```
改成
```cpp
update(1,x,y,1,n,k);
```
试试？
by Alexxtl @ 2023-10-18 23:51:59
@[Alexxtl](/user/598187) 试了一下 还是全wa()但是样例过了
by hnoi @ 2023-10-20 15:48:39