using System;

using System.Linq;

public class Program

{

    public static void Main()

    {

        string s = "YZK000022-1";

        var prefix = new string(s.TakeWhile(Char.IsLetter).ToArray());

        s=new string(s.Except(prefix)).ToString();

            Console.WriteLine(s);

        Console.WriteLine(s);

    }

}