import java.util.Scanner;

public class Main {

    public static void main(String[] args) {

// Write your code here

        Scanner scan = new Scanner(System.in);

        int n = Integer.parseInt(scan.nextLine());

        int gradeTo3 = 0;

        int grade3To4 = 0;

        int grade4To5 = 0;

        int gradeUp5 = 0;

        double average = 0.00;

        for (int i = 0; i < n; i++) {

            double num = Double.parseDouble(scan.nextLine());

            average += num; // was average = +num (this doesn`t do anything)

            if (num >= 2.00 && num <= 2.99) gradeTo3++;

            else if (num >= 3.00 && num <= 3.99) grade3To4++;

            else if (num >= 4.00 && num <= 4.99) grade4To5++;

            else if (num >= 5.00) gradeUp5++;

        }

        double five = gradeUp5 * 1.0 / n * 100;

        double fourfive = grade4To5 * 1.0 / n * 100;

        double threefour = grade3To4 * 1.0 / n * 100;

        double fail = gradeTo3 * 1.0 / n * 100;

        double ave = average / n;

        System.out.printf("Top students: %.2f%%\n", five);

        System.out.printf("Between 4.00 and 4.99: %.2f%%\n", fourfive);

        System.out.printf("Between 3.00 and 3.99: %.2f%%\n", threefour);

        System.out.printf("Fail: %.2f%%\n", fail);

        System.out.printf("Average: %.2f", ave); // was  System.out.printf("Average:", ave); -> missing placeholder for ave

    }
}