using System;

​

public class Program

{

    public static void Main()

    {

        var radioPrint = MediaType.Radio | MediaType.Print;

        var radioPrintTelevision = radioPrint | MediaType.Television;

        Console.WriteLine(IncludesOnly(MediaType.BroadcastMedia, radioPrintTelevision));

        Console.WriteLine(IncludesOnly(radioPrintTelevision, radioPrintTelevision));

        Console.WriteLine(IncludesOnly(radioPrint, radioPrintTelevision));

    }

​

    [Flags]

    public enum MediaType : short

    {

        None = 0,

​

        Radio = 1,

        Print = 2,

        Television = 4,

        Cable = 8,

        Internet = 16,

        OnlineRadio = 32,

​

        NetworkMedia = Television | Cable,

        BroadcastMedia = Radio | Television | Cable | OnlineRadio,

        AllButInternet = Radio | Print | Television | Cable | OnlineRadio,

        AllMedia = Radio | Print | Television | Cable | Internet | OnlineRadio

    }

​

    public static bool IncludesOnly(MediaType source, MediaType mediaType)

    {

        return (~(mediaType) & source) == 0;

    }

}