using System;
using System.Collections.Generic;
using System.IO.Pipes;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Coder.Abc
{
    public class QuestionA
    {
        public static void Main(string[] args)
        {
            // 文字列の入力
            string s = Console.ReadLine();

            string answer = "Hello World!";

            Console.WriteLine(answer);
        }
    }
}