麻烦@我一下，我可能没及时看到。
by SJZ2010 @ 2023-09-02 15:01:53
@[SJZ2010](/user/809729)
```cpp
while(std::next_permutation(num, num+n-2));
```
改成
```cpp
while(std::next_permutation(num, num+n-1));
```
AC
[AC记录](https://www.luogu.com.cn/record/123571724)
记得关QwQ
by 2011Andy @ 2023-09-02 15:10:02
好的我试试
by SJZ2010 @ 2023-09-02 15:12:10
@[2011Andy](/user/660871) 已关
by SJZ2010 @ 2023-09-02 15:13:48