import java.util.Scanner;

public class pro {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int kvmLoze = Integer.parseInt(scanner.nextLine());
        double grozdekvm =Double.parseDouble(scanner.nextLine());
        int nujniLitri = Integer.parseInt(scanner.nextLine());
        int broiRabotnici = Integer.parseInt(scanner.nextLine());

        double totalGrozde = kvmLoze * grozdekvm;
        double vino = Math.abs(0.4 * totalGrozde / 2.5) ;
        if(vino > nujniLitri){
            double ostavashtovino = Math.ceil(vino -nujniLitri);
            double vinoNaChovek = Math.ceil(ostavashtovino / broiRabotnici);
            System.out.printf("Good harvest this year! Total wine: %.0f liters.%n %.0f liters left -> %.0f liters per person.", vino , ostavashtovino, vinoNaChovek);

        }else{
            double nedostiga =(nujniLitri - vino);
            double nedostigatochno = Math.floor(nedostiga);
            System.out.printf("It will be a tough winter! More %.0f liters wine needed.", nedostigatochno);
        }


    }
}