Computer Firm

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.nio.Buffer;

public class P05AComputerFirm {
    public static void main(String[] args) throws IOException {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));

       int computersNumber = Integer.parseInt(reader.readLine());

        double rating = 0;
        double averageRating = 0;
        double possibleSales = 0;

        for (int i = 1; i <= computersNumber; i++) {
            double sales = Integer.parseInt(reader.readLine());


            if (sales % 10 == 2) {
                rating += 2;
                possibleSales += 0;

            } else if (sales % 10 == 3) {
                rating += 3;
                possibleSales += Math.floor(sales / 10 * 0.50);

            } else if (sales % 10 == 4) {
                rating += 4;
                possibleSales += Math.floor(sales / 10 * 0.70);

            } else if (sales % 10 == 5) {
                rating += 5;
                possibleSales += Math.floor(sales / 10 * 0.85);

            } else if (sales % 10 == 6) {
                rating += 6;
                possibleSales += Math.floor(sales / 10);
            }

            averageRating = rating / computersNumber;
        }
        System.out.printf("%.2f\n%.2f", possibleSales, averageRating);
    }
}