Brothers

import java.util.Scanner;

public class Plochki {
    public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);

        double a = Double.parseDouble(scanner.nextLine());
        double b = Double.parseDouble(scanner.nextLine());
        double c = Double.parseDouble(scanner.nextLine());

        double d = Double.parseDouble(scanner.nextLine());

        double commonTimeForCleaning = 1 / (1/a + 1/b + 1/c);
        double commonTimeWithBreak = commonTimeForCleaning * 0.15 + commonTimeForCleaning;
        double timeLeft = Math.abs(d - commonTimeWithBreak);

        if (commonTimeWithBreak <= d) {
            System.out.printf("Cleaning time: %.2f%n", commonTimeWithBreak);
            System.out.printf("Yes, there is a surprise - time left -> %.0f hours.%n", Math.floor(timeLeft));
        } else {
            System.out.printf("Cleaning time: %.2f%n", commonTimeWithBreak);
            System.out.printf("No, there isn't a surprise - shortage of time -> %.0f hours.", Math.ceil(timeLeft));
        }
    }
}