import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int numOfDays = sc.nextInt();
        double leftfoodkg = sc.nextDouble();
        double fooddogperdaykg = sc.nextDouble();
        double foodcatperdaykg = sc.nextDouble();
        double foodturtleperdaygrams = sc.nextDouble();
        double dog = numOfDays*fooddogperdaykg;
        double cat = numOfDays*foodcatperdaykg;
        double turtle = numOfDays*(foodturtleperdaygrams/1000);
        double total = dog+cat+turtle;
        if(total<=leftfoodkg) {
            leftfoodkg -= total;
            System.out.printf("%.0f kilos of food left.", Math.floor(leftfoodkg));
        }
        else if(total>leftfoodkg)
        {
            total-=leftfoodkg;
            System.out.printf("%.0f more kilos of food are needed.",Math.ceil(total));
        }

    }
}