```cpp
sort(a,a+n-1);
```
**改**
```cpp
sort(a,a+n);
```
就可以AC了
by Super_excavator @ 2023-02-11 21:55:55
@[zhangruihan66](/user/782209)
by Super_excavator @ 2023-02-11 21:56:13
哦哦好滴，谢谢大佬
by zhangruihan66 @ 2023-02-11 22:13:09
终于过了
by zhangruihan66 @ 2023-02-11 22:14:23