import apple.laf.JRSUIConstants;

import java.util.Scanner;

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

        int area = Integer.parseInt(scanner.nextLine());
        double grapePerMeter = Double.parseDouble(scanner.nextLine());
        int wineNeeded = Integer.parseInt(scanner.nextLine());
        int workers = Integer.parseInt(scanner.nextLine());

        double totalWine = area * grapePerMeter * 0.4 / 2.5;
        double difference = 0.0;

        if (totalWine < wineNeeded) {
            System.out.printf("It will be a tough winter! More %.0f liters wine needed.", Math.floor(wineNeeded - totalWine));


        }else if (totalWine >= wineNeeded) {
            difference = (totalWine - wineNeeded) / workers;
            System.out.printf("Good harvest this year! Total wine: %.0f liters.\n", Math.floor(totalWine));
            System.out.printf("%.0f liters left -> %.0f liters per person.", Math.floor(totalWine - wineNeeded), difference);
        }

    }
}