7

package FirstStepsInCoding.Exc.lab;

import java.util.Scanner;

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

        double strawberryBGN = Double.parseDouble(s.nextLine());
        double bananaKG = Double.parseDouble(s.nextLine());
        double orangeKG = Double.parseDouble(s.nextLine());
        double berryKG = Double.parseDouble(s.nextLine());
        double strawberryKG = Double.parseDouble(s.nextLine());

        double berryBGN = Double.parseDouble(s.nextLine());


        double orangeBGN = berryBGN - (0.4 * berryBGN);
        double bananaBGN = berryBGN - (0.8 * berryBGN);
        double berrySum = berryBGN * berryKG;
        double orangeSum = orangeBGN * orangeKG;
        double bananaSum = bananaBGN * bananaKG;
        double strawberrySum = strawberryBGN * strawberryKG;
        double totalSum = berrySum + orangeSum + bananaSum + strawberrySum;

        System.out.printf("%.4f", totalSum);


    }
}