ProgBasics02Simple-Operations-Y05DanceHall

import java.util.Scanner;

public class Y05DanceHall {
    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 Garderob = Double.parseDouble(scanner.nextLine());

        double lengthInCm = length * 100;
        double widthInCm = width * 100;
        double GarderobInCm = Garderob * 100;
        double SpacePerDancer = 40+7000;


        double DanceRoomSize = lengthInCm * widthInCm; //goleminata na zalata v m2
        double WardrobeSize = GarderobInCm * GarderobInCm; // goleminata na garderoba
        double BenchSize = DanceRoomSize / 10; //golemina na peikata

        double Dancing = DanceRoomSize - WardrobeSize - BenchSize;
        double QuantityDancers = Math.floor (Dancing / SpacePerDancer);
        System.out.printf("%.0f", QuantityDancers);

        }

    }