TouristShop/Exam

using System;

namespace TouristShop
{
    class Program
    {
        static void Main(string[] args)
        {
            double budget = double.Parse(Console.ReadLine());

            string command = string.Empty;

            int itemCounter = 0;
            double totalPrice = 0;

            while (command != "Stop")
            {
                command = Console.ReadLine();

                if (command == "Stop")
                {
                    break;
                }

                itemCounter++;

                double itemPrice = double.Parse(Console.ReadLine());

                if (itemCounter % 3 == 0)
                {
                    itemPrice = itemPrice / 2;
                }

                totalPrice += itemPrice;

                if (totalPrice > budget)
                {
                    double moneyNeeded = totalPrice - budget;
                    Console.WriteLine ("You don't have enough money!");
                    Console.WriteLine($"You need {moneyNeeded:F2} leva!");
                    break;
                }
            }

            if (command == "Stop")
            {
                Console.WriteLine($"You bought {itemCounter} products for {totalPrice:F2} leva.");
            }
        }
    }
}