/in/foo.cc: In function 'int main()':
/in/foo.cc:27:16: warning: 'y' may be used uninitialized in this function [-Wmaybe-uninitialized]
  if(d[x][y][cnt]) return;
     ~~~~~~~~~~~^
/in/foo.cc:67:8: note: 'y' was declared here
  int x,y;
        ^
/in/foo.cc:27:16: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized]
  if(d[x][y][cnt]) return;
     ~~~~~~~~~~~^
/in/foo.cc:67:6: note: 'x' was declared here
  int x,y;
      ^