@[P_S_Q_Alex_](/user/225616)
虽然我不会线段树,并且好几天过去了
但是
```cpp
printf("%d\n",&cnt);
```
??????
by Rui_R @ 2020-08-04 07:34:35
@[Rui_R](/user/101984) 谢谢您!我疏忽了^_^
by Pansq @ 2020-08-04 16:40:59