var contract = Console.ReadLine();
            var contractType = Console.ReadLine();
            var addDesert = Console.ReadLine();
            var monthsCount = int.Parse(Console.ReadLine());

            var monthlyPayment = 0.0;

            if (contractType == "Small")
            {
                if (contract == "one")
                {
                    monthlyPayment = 9.98;
                }
                else
                {
                    monthlyPayment = 8.58;
                }
            }
            else if (contractType == "Middle")
            {
                if (contract == "one")
                {
                    monthlyPayment = 18.99;
                }
                else
                {
                    monthlyPayment = 17.09;
                }
            }
            else if (contractType == "Large")
            {
                if (contract == "one")
                {
                    monthlyPayment = 25.98;
                }
                else
                {
                    monthlyPayment = 23.59;
                }
            }
            else if (contractType == "ExtraLarge")
            {
                if (contract == "one")
                {
                    monthlyPayment = 35.99;
                }
                else
                {
                    monthlyPayment = 31.79;
                }
            }

            if (monthlyPayment < 10.00)
            {
                monthlyPayment += 5.50;
            }
            else if (monthlyPayment < 30.00)
            {
                monthlyPayment += 4.35;
            }
            else if (monthlyPayment > 30.00)
            {
                monthlyPayment += 3.85;
            }

            var decrease = monthlyPayment * 0.0375;

            if (contract == "two")
            {
                monthlyPayment -= decrease;
            }

            var totalPrice = monthlyPayment * monthsCount;

            Console.WriteLine($"{totalPrice:f2} lv.");