import java.util.Scanner;

public class Harvest1 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int areaVineyard = Integer.parseInt(scanner.nextLine());
        double kilosGrapePerSquareMeter = Double.parseDouble(scanner.nextLine());
        double litersWineNeeded = Double.parseDouble(scanner.nextLine());
        int numberWorkers = Integer.parseInt(scanner.nextLine());

        double litersWineProduced = areaVineyard * 0.4 * kilosGrapePerSquareMeter / 2.5;
        //System.out.println(litersWineProduced); OK!!!

        double litersWineRemaining = litersWineProduced - litersWineNeeded;
        double litersWinePerWorker = Math.ceil(litersWineRemaining / numberWorkers);
        //System.out.println(litersWinePerWorker); OK!!!
        if (litersWineRemaining < 0) {
            System.out.printf("It will be a tough winter! More %.0f liters wine needed.", Math.abs(litersWineRemaining));
        } else {
            System.out.printf("Good harvest this year! Total wine: %.0f liters.%n", Math.floor(litersWineProduced));
            int litersWineRemainingInteger = (int) Math.ceil(litersWineRemaining);
            int litersWinePerWorkerInteger = (int) Math.ceil(litersWinePerWorker);
            System.out.printf("%d liters left -> %d liters per person.", litersWineRemainingInteger, litersWinePerWorkerInteger);

        }

    }
}