/in/foo.cc: In function 'int main()':
/in/foo.cc:10:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   10 | for(int i=1;i<=a.size();i++) cnt++;
      |             ~^~~~~~~~~~
/in/foo.cc:11:14: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   11 | for(int i=1;i<=b.size();i++) ccnt++;
      |             ~^~~~~~~~~~