using System;

public class Program

{

    public static void Main()

    {

        var totalRolls = 0;

        var totalIterations = 10000;        

        var iterationsSoFar = 0;

        while (iterationsSoFar < totalIterations)

        {

            var numRolls = GetRandRollsNeededToBeAboveOne();

            totalRolls += numRolls;

            Console.WriteLine($"{numRolls} rolls.\tAverage is now {(float)totalRolls / iterationsSoFar}");

            ++iterationsSoFar;

        }

    }

    public static int GetRandRollsNeededToBeAboveOne()

    {

        var rand = new System.Random();

        var rollsNeeded = 0;

        var total = 0.0;

        while (total < 1.0)

        {

            total += rand.NextDouble();

            ++rollsNeeded;

        }

        return rollsNeeded;

    }

}