import java.util.*;

// 注意类名必须为 Main, 不要有任何 package xxx 信息
public class Main {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        // 注意 hasNext 和 hasNextLine 的区别
        while (in.hasNextLine()) {
            int times = Integer.parseInt(in.nextLine());
            String[] lines = new String[times];
            for (int i = 0; i < times; ++i) {
                lines[i] = in.nextLine();
            }
            Arrays.sort(lines);
            for (String line : lines) {
                System.out.println(line);
            }
        }
    }
}