01. Supplies for School

using System;

namespace _01._Supplies_for_School
{
    class Program
    {
        static void Main(string[] args)
        {
            int countPens = int.Parse(Console.ReadLine());
            int countMarkers = int.Parse(Console.ReadLine());
            double litersCleaner = double.Parse(Console.ReadLine());
            int discount = int.Parse(Console.ReadLine());
            //Пакет химикали - 5.80 лв
            //Пакет маркери - 7.20 лв
            //Препарат - 1.20 лв (за литър)
            double pricePens = countPens * 5.80;
            double priceMarkers = countMarkers * 7.20;
            double priceCleaner = litersCleaner * 1.20;

            double totalPrice = pricePens + priceMarkers + priceCleaner;
            double priceWithDiscount = totalPrice - (totalPrice * discount) / 100;

            Console.WriteLine($"{priceWithDiscount:f3}");
        }
    }
}