ThreeBrothers

package IzpitZadachi.b_Second;

import java.util.Scanner;

public class ThreeBrothers {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        Double a = Double.parseDouble(scan.nextLine());
        Double b = Double.parseDouble(scan.nextLine());
        Double c = Double.parseDouble(scan.nextLine());
        Double d = Double.parseDouble(scan.nextLine());

        Double cleaningtime = 1 / (1 / a + 1 / b + 1 / c);
        cleaningtime = cleaningtime + (cleaningtime * 0.15);
        System.out.printf("Cleaning time: %.2f%n", cleaningtime);

        if (cleaningtime < d) {
            System.out.printf("Yes, there is a surprise - time left -> %.0f hours.",
                    Math.floor(d - cleaningtime));

        } else {

            System.out.printf("No, there isn't a surprise - shortage of time -> %.0f hours.",
                    Math.ceil(cleaningtime - d));
        }


    }


}