using System;

public class Program

{

    public static void Main()

    {

        var ciscoGuid = "4204630016-0000065536-0000000223-0727817739";

        var parts = ciscoGuid.Split('-');

        var b = string.Join("", parts.Select(part => long.Parse(part).ToString("x8"))).ToUpper();

        Console.WriteLine(b);

    }

}