FishLand

import java.util.Scanner;

public class FishMarket {
    public static void main (String[]args){
        // 6.90
        // //4.20
        ////1.5
        ////2.5
        ////1
        //Цена на паламуда = 6.90 + 6.90 * 0.60 = 11.04 лв. за килограм
        //Сума паламуд = 1.5 * 11.04 = 16.56
        //Цена на сафрид = 4.20 + 4.20 * 0.80 =  7.56 лв. за килограм
        //Сума сафрид = 2.5 * 7.56 = 18.90
        //Сума миди = 1 * 7.50 = 7.50
        //Сметка = 16.56 + 18.90 + 7.50 = 42.96
        Scanner scanner = new Scanner (System.in);
        double priceskumriqkg = Double.parseDouble(scanner.nextLine());
       double pricecacakg = Double.parseDouble(scanner.nextLine());
        double kgpalamud = Double.parseDouble(scanner.nextLine());
        double kgsafrid = Double.parseDouble(scanner.nextLine());
        double kgmidi = Double.parseDouble(scanner.nextLine());

        double CenaNaPalamud = priceskumriqkg + priceskumriqkg * 0.60;
        double SumaPalamud = kgpalamud * CenaNaPalamud;
        double CenaNaSafrid = pricecacakg + pricecacakg * 0.80;
        double SumaSafrid = kgsafrid * CenaNaSafrid;
        double SumaMidi = kgmidi * 7.50;
        double Smetka = SumaPalamud + SumaSafrid + SumaMidi;
        System.out.printf("%.2f", Smetka);






    }

}
//6.90
//4.20
//1.5
//2.5
//1