import java.util.Scanner;

public class E05familyHouse {
        public static void main(String[] args) {
            Scanner scanner = new Scanner(System.in);

            int mounths = Integer.parseInt(scanner.nextLine());

            double electricityBill = 0;
            double average = 0;
            double waterBill = 20 * mounths;
            double internetBill = 15 * mounths;
            double otherBill = 0;

            for (int i = 0; i < mounths; i++) {
                double electricity = Double.parseDouble(scanner.nextLine());
                electricityBill += electricity;
                otherBill = (electricityBill + waterBill + internetBill);
                otherBill *= 1.2;
                average = (electricityBill + waterBill + internetBill + otherBill) / mounths;

            }


            System.out.printf("Electricity: %.2f lv%n", electricityBill);
            System.out.printf("Water: %.2f lv%n", waterBill);
            System.out.printf("Internet: %.2f lv%n", internetBill);
            System.out.printf("Other: %.2f lv%n", otherBill );
            System.out.printf("Average: %.2f lv%n", average);

        }

    }