using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine(Ho());

        Console.WriteLine(Ho(Ho()));

        Console.WriteLine(Ho(Ho(Ho())));

    }

    static string Ho()

    {

        return "Ho!";

    }

    static string Ho(string santa)

    {

        return "Ho " + santa.ToString();

    }

}

​