AlcoholMarket_07

import java.util.Scanner;

public class AlcoholMarket_07 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        //1. read input -> price of whiskey, quantity whiskey, rakia, wine, beer
        //2. price of rakia = price of whiskey / 2
        //3. price of wine = price of rakia - 0.4 * price of rakia -> 0.6 * price of rakia
        //4. price of beer = price of rakia - 0.8 * price of rakia -> 0.2 * price of rakia
        //5. total price ( price of whiskey * quantity whiskey) + (price of rakia * quantity rakia)
        // + (price of wine * quantWine) + (price of beer * quantBeer)
        //6. print total price -> 2 (digit)

        double whiskeyPrice = Double.parseDouble(scanner.nextLine());
        double beerLiters = Double.parseDouble(scanner.nextLine());
        double wineLiters = Double.parseDouble(scanner.nextLine());
        double rakiaLiters = Double.parseDouble(scanner.nextLine());
        double whiskeyLiters = Double.parseDouble(scanner.nextLine());

        double rakiaPrice = whiskeyPrice / 2;
        double winePrice = rakiaPrice - 0.4 * rakiaPrice; // 0.6 * rakiaPrice
        double beerPrice = rakiaPrice - 0.8 * rakiaPrice; // 0.2 * rakiaPrice

        double totalPrice = (whiskeyPrice * whiskeyLiters)
                + (winePrice* wineLiters)
                + (rakiaPrice* rakiaLiters)
                +(beerPrice * beerLiters) ;

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

}