/in/foo.cc: In function 'int main()':
/in/foo.cc:25:21: warning: 'ans2' may be used uninitialized in this function [-Wmaybe-uninitialized]
   cout<<ans1<<endl<<ans2<<endl;
                     ^~~~
/in/foo.cc:25:9: warning: 'ans1' may be used uninitialized in this function [-Wmaybe-uninitialized]
   cout<<ans1<<endl<<ans2<<endl;
         ^~~~