import java.util.Scanner;

public class dreamItem290315evening {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        String[] input = scan.nextLine().split("/");
        String month = input[0];
        double perHour = Double.parseDouble(input[1]);
        double hours = Double.parseDouble(input[2]);
        double price = Double.parseDouble(input[3]);
        int days = 0;

        switch(month){
            case "Feb":
                days = 28;
                break;
            case "Apr":
            case "June":
            case "Sept":
            case "Nov":
                days = 30;
                break;
            default:
                days = 31;
                break;
        }
        days = days - 10;
        double total = days * perHour * hours;
        if(total > 700){
            total = total + total * 0.10;
        }
        if (total - price >= 0){
            System.out.printf("Money left = %.2f leva.",total - price);
        }else{
            System.out.printf("Not enough money. %.2f leva needed.",Math.abs(price - total));
        }
    }
}