c# Kafemashina

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            string drink = Console.ReadLine();
            string sugar = Console.ReadLine();
            int countOfDrinks = int.Parse(Console.ReadLine());
            double price = 0;
            // double totalPrice = 0;

            if (drink == "Espresso")
            {
                if (sugar == "Without")
                {
                    price = countOfDrinks * 0.9;
                    price = price - price * 0.35;
                }
                else if (sugar == "Normal") price = countOfDrinks * 1;
                else if (sugar == "Extra") price = countOfDrinks * 1.2;
                if (countOfDrinks >= 5) price = price - price * 0.25;
                if (price > 15) price = price - price * 0.2;
            }
            else
            {
                if (drink == "Tea")
                {
                    if (sugar == "Without")
                    {
                        price = countOfDrinks * 0.5;
                        price = price - price * 0.35;
                    }
                    else if (sugar == "Normal") price = countOfDrinks * 0.6;
                    else if (sugar == "Extra") price = countOfDrinks * 0.7;
                    if (price > 15) price = price - price * 0.2;
                }

                else
                {
                    if (drink == "Cappuccino")
                    {
                        if (sugar == "Without")
                        {
                            price = countOfDrinks * 1;
                            price = price - price * 0.35;
                        }
                        else if (sugar == "Normal") price = countOfDrinks * 1.2;
                        else if (sugar == "Extra") price = countOfDrinks * 1.6;
                        if (price > 15) price = price - price * 0.2;
                    }
                }
            }
            Console.WriteLine("You bought {0} cups of {1} for {2:F2}lv.", countOfDrinks, drink, price);
        }
    }
}