@[JustPureH2O](/user/612722) https://www.luogu.com.cn/record/144162658
by ForgotDream_CHN @ 2024-01-24 17:02:38
j 没加一导致的。
by ForgotDream_CHN @ 2024-01-24 17:02:53
```cpp
//if (d) M.mat[i][num(j, d - 1)] = 1;
```
因为j是从0开始枚举的，所以这句话中应为j+1
by sunkaihuan @ 2024-01-24 17:05:49
哦哦wssb，谢谢大佬orz
by JustPureH2O @ 2024-01-24 18:18:49