namespace EntropyCalc
{
    internal class Program
    {
        static void Main(string[] args)
        {
            var z = @"C:\n\Weird.Win64.Blau!E.exe";
            var e = 0.00;
            if (File.Exists(z))
            {
                var n = File.ReadAllBytes(z);
                var p = 0.00;
                foreach (var x in n.GroupBy(n => n))
                {
                    p = (double)x.Count() / n.Length;
                    e -= p * Math.Log2(p);
                }
            }
            Console.WriteLine($"{e:F4}");
        }
    }
}