using System;

using System.Collections;

​

​

​

​

namespace Test

{

    public class Program

    {

        public static void Main(string[] args)

        {

            long wynik = 0;

            BitArray ba = new BitArray(BitConverter.GetBytes(wynik));

            ba[0] = true;

            ba[1] = true;

            ba[2] = true;

            ba[3] = true;

            ba[4] = true;

            ba[5] = true;

            ba[6] = true;

            ba[7] = false;

            ba[8] = true;

            byte[] res = new byte[(ba.Length + 7) / 8];

            ba.CopyTo(res, 0);

            wynik = BitConverter.ToInt64(res, 0);

             Console.WriteLine(wynik);

        }

    }

}