using System;

using System.Collections.Generic;

using System.Net;

using System.Linq;

using System.Net.Sockets;

public class Program

{

    public static void Main()

    {

        var ports = new List<int>();

        for (int i = 0; i < 1000; i++)

        {

            using var c = new UdpClient(0);

            var ipe = c.Client.LocalEndPoint as IPEndPoint;

            ports.Add(ipe.Port);

            Console.WriteLine(ipe);

        }

        Console.WriteLine($"Total ports: {ports.Count}");

        Console.WriteLine($"Unique ports: {ports.Distinct().Count()}");

    }

}