#include <string>
#include <iostream>
#include <algorithm>

int main() {
    std::string l;
    std::vector<std::string> lines;

    while (std::getline(std::cin, l))
	lines.push_back(l);

    std::sort(lines.begin(), lines.end());

    for(auto i = lines.begin(); i != lines.end(); ++i)
	std::cout << *i << std::endl;
}