/in/foo.cc: In function 'int main()':
/in/foo.cc:9:6: warning: unused variable 'nmin' [-Wunused-variable]
  int nmin=0,mmin=0;
      ^~~~
/in/foo.cc:9:13: warning: unused variable 'mmin' [-Wunused-variable]
  int nmin=0,mmin=0;
             ^~~~