chk里面错了，现在改回来了，
```cpp
const char chk[6][6]={
'0','0','0','0','0','0',
'0','1','1','1','1','1',
'0','0','1','1','1','1',
'0','0','0','*','1','1',
'0','0','0','0','0','1',
'0','0','0','0','0','0'
};
```
但是样例还是-1,-1,WA
by JacoAquamarine @ 2023-07-16 10:47:21
读入map的时候判断是不是*，if里的 **'=' 应改为'=='**。此外，没读明白dfs里最后一个参数的意思，去掉以后仍能ACqwq
by immerse_23 @ 2023-07-25 10:33:06
@[immerse_23](/user/540130) 貌似是一个小剪枝，保证从A到B后不会再从B到A
by kk1501201 @ 2023-09-10 17:08:06
@[kk1501201](/user/259625) zqd
by immerse_23 @ 2023-09-10 19:24:50