using System;

public class Test
{
	public static void Main()
	{
            long k = 123456789101112L;
            string str = Convert.ToBase64String(BitConverter.GetBytes(k));
            Console.WriteLine(str);
            long x = BitConverter.ToInt64(Convert.FromBase64String(str), 0);
            Console.WriteLine("{0} {1} {2}", k, x, x==k);
	}
}