import java.util.Scanner;

public class Harvest {
    public static void main(String[] args) {
        Scanner sc=new Scanner(System.in);

        int x = Integer.parseInt(sc.nextLine());
        double y= Double.parseDouble(sc.nextLine());
        int z= Integer.parseInt(sc.nextLine());
        int workers = Integer.parseInt(sc.nextLine());

        double grape= x*y;
        double grapeForWine= (grape/2.5) * 0.4;
        if (grapeForWine >=z){
            System.out.printf("Good harvest this year!Total wine: %.0f liters.%n", Math.floor(grapeForWine));
            double left= grapeForWine- z;
            double winePerWorker= left/workers;
            System.out.printf("%.0f liters left-> %.0f liters per person.", Math.ceil(left), Math.ceil(winePerWorker));
        }else{
            double neededWine= z-grapeForWine;
            System.out.printf("It will be a tough winter! More %.0f liters wine needed.", Math.floor(neededWine));
        }

    }
}