using System;

using System.Collections.Generic;

using System.Linq;

public class Program

{

    enum Color { Red, Green, Blue };

    public static void Main()

    {

        var colors = new int[]{ (int)Color.Red, (int)Color.Green };

        if(colors.Contains((int)Color.Red))

            Console.WriteLine("Red is contained");

        if(!colors.Contains((int)Color.Blue))

            Console.WriteLine("Blue is not contained");

    }

}