fishtank

package com.company;

import java.util.Scanner;

public class Main2 {

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

        int l = Integer.parseInt(s.nextLine());
        int w = Integer.parseInt(s.nextLine());
        int h = Integer.parseInt(s.nextLine());
        double per = Double.parseDouble(s.nextLine());

        int volCM = l * w * h;
        double volL = volCM * 0.001;
        double nedL = volL - volL * per / 100;

        System.out.printf("%.5f", nedL);

    }

}