using System;

public class Tuple<T1, T2>

    {

        public Tuple(T1 item1, T2 item2)

        {

            this.Item1 = item1;

            this.Item2 = item2;

        }

​

        public T1 Item1 { get; }

​

        public T2 Item2 { get; }

    }

​

public class Program

{

    public static void Main()

    {

        Console.WriteLine("Hello World");

    }

}