using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

        List<string> names = new List<string>();

​

            var n = int.Parse(Console.ReadLine());

​

            for (int i = 0; i < n; i++)

            {

                names.Add(Console.ReadLine());

            }

​

            names.Sort();

​

            foreach (string name in names)

            {

                Console.WriteLine(name);

            }

    }

}