using System;

public class Program

{

    public static void Add(params int[] myList)

    {

        int sum = 0;

        foreach(var a in myList)

        {

            sum += a;

        }

        Console.WriteLine();

        Console.WriteLine(myList.Length.ToString());

        Console.WriteLine(sum.ToString());

    }

    public static void Main()

    {

        Add(1,2,3,4,5,6,7,8);

        Add(1,3,5,7,9);

    }

}