using System;

namespace _01.Repainting
{
    class Repainting
    {
        static void Main(string[] args)
        {
            double neededNylonKvM = double.Parse(Console.ReadLine());
            double neededPaintL = double.Parse(Console.ReadLine());
            double diluterL = double.Parse(Console.ReadLine());
            double neededHours = double.Parse(Console.ReadLine());

            double priceOfNylon = (neededNylonKvM + 2) * 1.50;
            double pricePaint = (neededPaintL + (neededPaintL * 0.10)) * 14.50;
            double neededDiluter = diluterL * 5.0;
            double price = priceOfNylon + pricePaint + neededDiluter + 0.40;

            double feeWorkers = (price * 0.30) * neededHours;

            double priceAll = price + feeWorkers;

            Console.WriteLine($"Total expenses: {priceAll:f2} lv.");

        }
    }
}