package com.denishristov;

import java.util.Scanner;

public class roomPaiting  {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int paintingBoxes = Integer.parseInt(scanner.nextLine());
        int Rolkitupeti = Integer.parseInt(scanner.nextLine());
        double gloves = Double.parseDouble(scanner.nextLine());
        double Chetka = Double.parseDouble(scanner.nextLine());

        double needGloves = Math.ceil(Rolkitupeti * 0.35);
        double needChetka = Math.floor(paintingBoxes * 0.48);

        double delivery = ((paintingBoxes * 21.5) + (Rolkitupeti * 5.20) + (gloves * needGloves) + (Chetka * needChetka)) / 15;

        System.out.printf("This delivery will cost %.2f lv.", delivery);

    }
}