/in/foo.cc: In function 'int get(int)':
/in/foo.cc:30:53: warning: statement has no effect [-Wunused-value]
  if(top>bot||Q[top][0]>=INF)return INF;else Q[top][0];
                                             ~~~~~~~~^
/in/foo.cc:31:1: warning: control reaches end of non-void function [-Wreturn-type]
 }
 ^