using System;

using System.Collections.Generic;

​

public class Program

{

    public static Queue<Card> CreateDeck()

    {

        throw new NotImplementedException();

    }

​

    public static Queue<Card> Shuffle(Queue<Card> deck)

    {

        throw new NotImplementedException();

    }

​

    public static void Main()

    {

    }

}

​

public enum Suit

{

    Red,

    Green,

    Blue

}

​

public class Card

{

    public Suit suit;

    public int val;

}