package test;

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 obshto = 1/(1/a+1/b+1/c);
        Double pochivka = obshto+(obshto*.15);
        Double ostatuk = d - pochivka;

        String yes ="Yes, there is a surprise - time left -> ";
        String no = "No, there isn't a surprise - shortage of time -> ";
        String clean = "Cleaning time: ";

        System.out.printf("%.2f, %s, %n", clean+pochivka);

        if (d > pochivka){
            System.out.printf("%.0f, %s",no +ostatuk +" hours.");}
            else {
            System.out.printf("%.0f %s",yes + ostatuk +" hours.");}

    }
}