/in/foo.cc: In function 'bool judge(int, int, int, int)':
/in/foo.cc:39:22: warning: 'q' may be used uninitialized in this function [-Wmaybe-uninitialized]
  if ((x<=p&&y<=q)||(x<=q&&y<=p))
                     ~^~~
/in/foo.cc:39:28: warning: 'p' may be used uninitialized in this function [-Wmaybe-uninitialized]
  if ((x<=p&&y<=q)||(x<=q&&y<=p))
                           ~^~~
/in/foo.cc:39:28: warning: 'y' may be used uninitialized in this function [-Wmaybe-uninitialized]
/in/foo.cc:39:22: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized]
  if ((x<=p&&y<=q)||(x<=q&&y<=p))
                     ~^~~