foo.cc: In function ‘int main()’:
foo.cc:33:29: warning: ‘ans1’ may be used uninitialized [-Wmaybe-uninitialized]
   33 |                 cout<<ans1<<' '<<ans2<<' ';
      |                             ^~~
foo.cc:23:21: note: ‘ans1’ was declared here
   23 |                 int ans1,ans2;
      |                     ^~~~
foo.cc:33:40: warning: ‘ans2’ may be used uninitialized [-Wmaybe-uninitialized]
   33 |                 cout<<ans1<<' '<<ans2<<' ';
      |                                        ^~~
foo.cc:23:26: note: ‘ans2’ was declared here
   23 |                 int ans1,ans2;
      |                          ^~~~