/in/foo.cc: In function 'bool isequal(std::__cxx11::string, std::__cxx11::string)':
/in/foo.cc:18:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<s1.length();i++)
              ~^~~~~~~~~~~~
/in/foo.cc: In function 'int find(std::vector<q>, std::__cxx11::string)':
/in/foo.cc:28:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i=0;i<st.size();i++)
              ~^~~~~~~~~~
/in/foo.cc: In function 'long long int cc(std::vector<q>, std::__cxx11::string, int)':
/in/foo.cc:38:6: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  if(i==s.length())
     ~^~~~~~~~~~~~
/in/foo.cc:43:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int h=i;h<s.length();h++)
              ~^~~~~~~~~~~