using System;

using System.Threading.Tasks;

using System.Threading;

public class Program

{

    public static int completed = 0;

    public static async Task DoWork(int delay, int i) {

        await Task.Delay(delay);

        Console.WriteLine(i);

        completed++;

    }

    public static async Task SpawnWork() {

        for (int i = 1; i <= 30; i++) {

            await DoWork(500 / i, i);

        }

    }

    public static void Main()

    {

        SpawnWork().Wait();

    }

}