using System;
public class Program
{
public static void Main(string[] args)
int[] source = new int[]{1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20};
int n = 0;
int[] destination = new int[] {n};
Array.Copy(source, destination);
Console.WriteLine (string.Join("n", destination));
}