03. вариант 2

using System;

namespace _03
{
    class Program
    {
        static void Main(string[] args)
        {
            double width = double.Parse(Console.ReadLine());
            double length = double.Parse(Console.ReadLine());
            int countCameras = int.Parse(Console.ReadLine());
            string firmName = Console.ReadLine();

            double area = width * length;
            double price = 0;

            if (firmName == "Dogramichka4You")
            {
                if (countCameras == 3)
                {
                    price = 12;
                }
                else if (countCameras == 4)
                {
                    price = 15;
                }
                else if (countCameras == 5)
                {
                    price = 20;
                }
            }
            else if (firmName == "TihoToplo")
            {
                if (countCameras == 3)
                {
                    price = 15;
                }
                else if (countCameras == 4)
                {
                    price = 14;
                }
                else if (countCameras == 5)
                {
                    price = 18;
                }
            }
            else if (firmName == "ChukChuk")
            {
                if (countCameras == 3)
                {
                    price = 14;
                }
                else if (countCameras == 4)
                {
                    price = 20;
                }
                else if (countCameras == 5)
                {
                    price = 22;
                }
            }


            double totalPrice = area * price;
            Console.WriteLine($"Goshko has to spend {totalPrice:F2} leva.");


        }
    }
}