/in/foo.cc: In function 'int main()':
/in/foo.cc:17:18: 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 (; i < s.length(); i++)
      |                ~~^~~~~~~~~~~~
/in/foo.cc:47:33: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   47 |         else if(match.empty()&&i==s.length())
      |                                ~^~~~~~~~~~~~