AlcoholMarket

import java.util.Scanner;

public class P01_AlcoholMarket {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        double whiskeyPrice = Double.parseDouble(scanner.nextLine());
        double beerLiter = Double.parseDouble(scanner.nextLine());
        double wineLiter = Double.parseDouble(scanner.nextLine());
        double rakiaLiter = Double.parseDouble(scanner.nextLine());
        double whiskeyLiter = Double.parseDouble(scanner.nextLine());

        double rakiaPrice = whiskeyPrice/2;
        double winePrice = rakiaPrice-(rakiaPrice*((double) 40/100));
        double beerPrice = rakiaPrice-(rakiaPrice*((double) 80/100));

        double sumWhiskey = whiskeyPrice*whiskeyLiter;
        double sumBeer = beerPrice*beerLiter;
        double sumWine = winePrice*wineLiter;
        double sumRakia = rakiaPrice*rakiaLiter;

        double allSum = sumWhiskey+sumBeer+sumWine+sumRakia;

        System.out.printf("%.2f", allSum);
    }
}