Three brothers

import java.util.Scanner;

public class demo {
    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 time  = 1/ (1/a + 1/b + 1/c);
       double rest = time * 0.15;
       double totalTime = time + rest;

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