/in/foo.cc: In function 'void solve0()':
/in/foo.cc:8:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     if (s.find("emo") != -1)
         ~~~~~~~~~~~~~~^~~~~
/in/foo.cc: In function 'void solve1()':
/in/foo.cc:24:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (int i = 0; i < v.size() - 2; i++)
                     ~~^~~~~~~~~~~~~~