/in/foo.cc: In function 'int main()':
/in/foo.cc:17:31: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |             for (int i = 2; i < s.length(); i++) {
      |                             ~~^~~~~~~~~~~~
/in/foo.cc:20:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |             if (cnt >= (s.length()-2)/2+1) cout << "Yes" << endl;
      |                 ~~~~^~~~~~~~~~~~~~~~~~~~~