Birhday

import java.util.Scanner;

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

        double length = Double.parseDouble(scanner.nextLine());
        double width = Double.parseDouble(scanner.nextLine());
        double height = Double.parseDouble(scanner.nextLine());
        double percent = Double.parseDouble(scanner.nextLine());

        double volume, result, total;

        volume = length * width * height;
        volume = volume * 0.001;
        total = volume - (percent/100 * volume);

        System.out.printf("%.3f", total);

    }
}