Зала за танци

import java.util.Scanner;

public class DanceHall {
    public static void main(String[] agrs) {
        Scanner scan = new Scanner(System.in);

        double L = Double.parseDouble(scan.nextLine());
        double W = Double.parseDouble(scan.nextLine());
        double A = Double.parseDouble(scan.nextLine());

        double hall = (L * 100) * (W * 100);
        double wardrobe = (A * 100) * (A * 100);
        double bench = hall / 10;
        double freeSpace = hall - wardrobe - bench;
        double dancers=freeSpace/ (40 + 7000);

        System.out.println((int)Math.floor(dancers));
    }
}