/in/foo.cc: In function 'int main()':
/in/foo.cc:26:23: warning: 'ans2' may be used uninitialized in this function [-Wmaybe-uninitialized]
  cout<<ans1<<" "<<ans2;
                       ^
/in/foo.cc:26:14: warning: 'ans1' may be used uninitialized in this function [-Wmaybe-uninitialized]
  cout<<ans1<<" "<<ans2;
              ^~~