using System;

public class MyProgram
{
    private static Random random = new Random();

    public static void Main(string[] args)
    {
        int i, p, a;

        p = 0;
        for (i = 1; i <= 20; i++)
        {
            a = random.Next(101) - 50;
            Console.Write(Convert.ToString(a) + " ");
            if (Math.Abs(a) % 2 == 0)
            {
                p = p + 1;
            }
        }

        Console.WriteLine("\npárosok száma: " + p);
    }
}