using System;

public class Program

{

    public static void ImprimirPares()

    {

        Console.WriteLine("Insira o valor");

        int n = int.Parse(Console.ReadLine());

        for(var i = 0; i <= n; i += 2) {

            Console.WriteLine(i);

        }

    }

    public static void Main()

    {

        Console.WriteLine("***Enfeite***");

        ImprimirPares();

    }

}