using System;

public class Program

{

    public static void Main()

    {

        var a1 = 1;

        var a2 = 2;

        var a3 = 3; 

        a(a1,a2,a3);

        var x = "Hello world";

        p(new [] {a1,a2,a3});

    }

​

    public static void a(params int[] x) {}

    public static void p(int[] x) {}

}