using System;

public class Program

{

    public static void Main()

    {

        double[] prices = new double[8] { 55.39, 109.23, 48.29, 81.59, 81.58, 105.53, 94.45, 12.24 };

        Console.WriteLine(MaxProfit(prices));

    }

    static string MaxProfit(double[] prices)

    {

        double max = double.MinValue;

        double maxDiff = double.MinValue;

        double diff = 0;

        double bottom = prices[0];

        for (int i = 1; i < prices.Length; i++)

        {

            diff += prices[i] - prices[i - 1];

            if (diff > maxDiff)

            {

                maxDiff = diff;

                max = prices[i];

            }

            if (prices[i] < bottom)

            {

                bottom = prices[i];

                diff = 0;

            }

        }

        return string.Format("Buy at {0}; Sell at {1}; Profit of ${2}", max - maxDiff, max, maxDiff);

    }

}