using System.Windows;

using System.Windows.Input;

using System;

using System.IO;

using System.IO.Pipes;

using System.Net;

using System.Net.Http;

using System.Net.NetworkInformation;

using System.Net.Sockets;

using System.Web;

using System.Xml;

using System.Collections;

using System.Collections.Generic;

using System.Collections.Specialized;

using System.Collections.ObjectModel;

using System.ComponentModel;

using System.Data;

using System.Diagnostics;

using System.Linq;

using System.Text;

using System.Text.Json;

using System.Text.RegularExpressions;

using System.Reflection;

using System.Reflection.Emit;

using System.Threading;

using System.Threading.Tasks;

using System.Runtime.InteropServices;

using System.Globalization;

using System.Security;

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

    }

}