把a[xx][yy]写在for循环外面。
by Azure__ @ 2022-05-26 22:06:31
@[wangziqiao](/user/511229)
```cpp
if(a[qx][qy] == 0){
a[xx][yy] = 1;
dfs(qx,qy);
a[xx][yy] = 0;
}
```
应改成
```cpp
if(a[qx][qy] == 0){
a[qx][qy] = 1;
dfs(qx,qy);
a[qx][qy] = 0;
}
```
在``dfs(sx,sy);``前面加上``a[sx][sy]=1;``
by LaDeX @ 2022-05-26 22:14:13
@[GIAOchen](/user/431658) 谢谢您！！！
by monkey_sort @ 2022-05-27 16:31:27