using System;

public class Program

{

    public static void Main()

    {

        Console.WriteLine(TestParams(1));

        Console.WriteLine(TestParams(1, 2, 3));

    }

    public static string TestParams(object first, params object[] rest)

    {

        return rest == null ? "Rest is null" : (rest.Length == 0 ? "Rest is empty" : "Rest has content");

    }

}