/in/foo.cc:49:8: error: stray '`' in program
     cin```>>s;
        ^
/in/foo.cc:49:9: error: stray '`' in program
     cin```>>s;
         ^
/in/foo.cc:49:10: error: stray '`' in program
     cin```>>s;
          ^
/in/foo.cc: In function 'void GetCount(std::__cxx11::string, int*)':
/in/foo.cc:6:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for(int i=0; i<s.length()-1; i++)
                 ~^~~~~~~~~~~~~