using System;

public class Program

{

    public static void Main()

    {

        var r = new Random();

        var trials = 10000000;

        double sum = 0;

        for(var i =0; i<trials; i++)

        {

            sum += Math.Abs(r.NextDouble()*3 - r.NextDouble()*3);

        }

        Console.WriteLine("Average = " + (sum/trials));

    }

}