/in/foo.cc: In function 'int main()':
/in/foo.cc:13:30: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   13 |                 for(int i=0;i<s.size();i++)
      |                             ~^~~~~~~~~
/in/foo.cc:19:56: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   19 |                         else if(s[i]=='8' || s[i]=='9' && ans<=10)
/in/foo.cc:27:40: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
   27 |                         else if(ans<=2 && s[i]=='1' || s[i]=='0')
      |                                 ~~~~~~~^~~~~~~~~~~~