using System;
using System.Threading.Tasks;

public class Ex5
{
    public static async Task Run()
    {
        /* Example for Task Coordination using Task.WhenAll() */
        Random random = new();
        async Task<(int index, int waitingTime)> randomDelay(int index)
        {
            var waitingTime = random.Next(500, 2000);
            await Task.Delay(waitingTime);
            return (index, waitingTime);
        }

        var delayTask1 = randomDelay(1);
        var delayTask2 = randomDelay(2);
        var delayTask3 = randomDelay(3);

        await Task.WhenAll(delayTask1, delayTask2, delayTask3);

        Console.WriteLine($"Task {delayTask1.Result.index} had to wait for {delayTask1.Result.waitingTime} ms");
        Console.WriteLine($"Task {delayTask2.Result.index} had to wait for {delayTask2.Result.waitingTime} ms");
        Console.WriteLine($"Task {delayTask3.Result.index} had to wait for {delayTask3.Result.waitingTime} ms");
    }
}