using System;

using System.Linq;

public class Program

{

    public static void Main()

    {

        var failureRate = 0.0244;

        var n = 1;

        var t = 3600;

        var rnd = new Random();

        var failSeconds = Enumerable.Range(0, t).Select(s =>

            Enumerable.Range(0, n).All(_ => rnd.NextDouble() <= failureRate) ? 1 : 0).Sum();

        Console.WriteLine("A1: Availability: " +(t - failSeconds) / (double)t);

    }

}