>>644
#include <iostream>
#include <vector>
#include <algorithm>
#include <string>
#include <iterator>

int main()
{
  vector<string> v;
  copy(istream_iterator<string>(cin), istream_iterator<string>(),
       back_inserter(v));
  sort(v.begin(), v.end());
  copy(v.begin(), v.end(), ostream_iterator<string>(cout, "\n"));
}