@[I_love_your_mother](/user/389540) ```cpp else if(k[i][j]==-1&&(!fz&(1<<j-1))) ``` => ```cpp else if (k[i][j] == -1 && !(fz & (1 << j - 1))) ``` 原因您自己想。 by metaphysis @ 2021-01-03 19:23:26