04. Tourist Shop

using System;


namespace _02._Odd_Occurrences
{
    class Program
    {
        static void Main(string[] args)
        {
            double budget = double.Parse(Console.ReadLine());
            string productName = Console.ReadLine(); //име на продукт или "Stop"
            int countBoughtProducts = 0;
            double totalPrice = 0;

            while (productName != "Stop")
            {
                //име на продукт
                //цена на продукта
                double productPrice = double.Parse(Console.ReadLine());
                countBoughtProducts++;
                //1. проверка дали е трети продукт
                if (countBoughtProducts % 3 == 0)
                {
                    productPrice /= 2;
                }
                //2. купим
                budget -= productPrice;
                totalPrice += productPrice;
                //3. достатъчен ли е бюджета

                if (budget < 0)
                {
                    Console.WriteLine("You don't have enough money!");
                    Console.WriteLine($"You need {Math.Abs(budget):F2} leva!");
                    break;
                }
               productName = Console.ReadLine();

            }

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



        }
    }
}