import java.util.Scanner;

public class PizzaLunchProgram {
    public static void main(String[] args) {
        int  numEmployees, slices, total;

        // Find out how many people will be at the lunch
        System.out.print("How many employees will be at the lunch ? ");
        numEmployees = new Scanner(System.in).nextInt();

        // Now ask each for the number of slices that they want and add to total
        total = 0;
        for (int i=1; i<=numEmployees; i++) {
            System.out.print("How many slices for employee " + i + " ?  ");
            slices = new Scanner(System.in).nextInt();
            total += slices;
        }

        // Now find out how many whole large pizzas to buy
        System.out.println("You need to order " +
				   Math.ceil(total /8.0) + " large pizzas.");
    }
}