/in/foo.cc: In function 'int main()':
/in/foo.cc:7:23: warning: variable 'maxi' set but not used [-Wunused-but-set-variable]
  int min=40000,max=-1,maxi,maxj,mini,minj;
                       ^~~~
/in/foo.cc:7:28: warning: variable 'maxj' set but not used [-Wunused-but-set-variable]
  int min=40000,max=-1,maxi,maxj,mini,minj;
                            ^~~~
/in/foo.cc:7:33: warning: variable 'mini' set but not used [-Wunused-but-set-variable]
  int min=40000,max=-1,maxi,maxj,mini,minj;
                                 ^~~~
/in/foo.cc:7:38: warning: variable 'minj' set but not used [-Wunused-but-set-variable]
  int min=40000,max=-1,maxi,maxj,mini,minj;
                                      ^~~~