Aluminum Joinery

using System;

namespace Exams_Prep
{
    class Program
    {
        static void Main(string[] args)
        {
            int numDograma = int.Parse(Console.ReadLine());
            string nameDograma = Console.ReadLine();
            string deliveryOption = Console.ReadLine();

            double price = 0;
            int delivery = 60;

            if(nameDograma == "90X130")
            {
                price += numDograma * 110;
                if(numDograma > 30 && numDograma <= 60)
                {
                    price -= price * 0.05;
                }
                else if(numDograma > 60)
                {
                    price -= price * 0.08;
                }
            }
            else if (nameDograma == "100X150")
            {
                price += numDograma * 140;
                if (numDograma > 40 && numDograma <= 80)
                {
                    price -= price * 0.06;
                }
                else if (numDograma > 80)
                {
                    price -= price * 0.1;
                }
            }
            else if (nameDograma == "130X180")
            {
                price += numDograma * 190;
                if (numDograma > 20 && numDograma <= 50)
                {
                    price -= price * 0.07;
                }
                else if (numDograma > 50)
                {
                    price -= price * 0.12;
                }
            }
            else if (nameDograma == "200X300")
            {
                price += numDograma * 250;
                if (numDograma > 25 && numDograma <= 50)
                {
                    price -= price * 0.09;
                }
                else if (numDograma > 50)
                {
                    price -= price * 0.14;
                }
            }

            if(numDograma >= 99 && deliveryOption == "With delivery")
            {
                price += delivery;
                price -= price * 0.04;
                Console.WriteLine($"{price:f2} BGN");
            }
            else if(numDograma <= 10)
            {
                Console.WriteLine("Invalid order");
            }
            else
            {
                Console.WriteLine($"{price:f2} BGN");
            }

        }
    }
}