/in/foo.cc: In function 'void Search(std::vector<std::vector<std::vector<int> > >&)':
/in/foo.cc:35:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0; i < s.size(); i++)
                  ~~^~~~~~~~~~
/in/foo.cc:14:6: warning: unused variable 'count' [-Wunused-variable]
  int count = 0;
      ^~~~~