/in/foo.cc: In function 'void BFS(int, int)':
/in/foo.cc:19:27: error: expected ';' before '[' token
        if(a[x][y]!=0) && a[x][y]!=2)
                           ^
/in/foo.cc:19:23: warning: statement has no effect [-Wunused-value]
        if(a[x][y]!=0) && a[x][y]!=2)
                       ^~~~
/in/foo.cc:52:1: error: expected '}' at end of input
 }
 ^
/in/foo.cc:52:1: error: expected '}' at end of input
/in/foo.cc:52:1: error: expected '}' at end of input
/in/foo.cc:19:26: error: label 'a' used but not defined
        if(a[x][y]!=0) && a[x][y]!=2)
                          ^