import java.util.Scanner;

/**
 * Created by User on 18.7.2017 г..
 */
public class test {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

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

        double average = 0;

        double goodGrades = 0;
        double failStudents = 0;
        double topStudents = 0;
        double otlichni = 0;


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

            double grade = Double.parseDouble(scanner.nextLine());

            if (grade >= 4.00 && grade <= 4.99) { // 3-4
                goodGrades++;
            } else if (grade < 3.00) {
                failStudents++;
            } else if (grade >= 5.00) {
                topStudents++;
            } else if (grade >= 3.00 && grade <= 3.99) {
                otlichni++;
            }

            average = average + grade;
        }
        double otlichniciPercetage = (otlichni / n) * 100;
        double goodPercentage = (goodGrades / n) * 100;
        double topStudentsPercentage = (topStudents / n) * 100;
        double failPercantage = (failStudents / n) * 100;

        System.out.printf("Top students: %.2f%%\n", topStudentsPercentage);
        System.out.printf("Between 4.00 and 4.99: %.2f%%\n", goodPercentage);
        System.out.printf("Between 3.00 and 3.99: %.2f%%\n", otlichniciPercetage);
        System.out.printf("Fail: %.2f%%\n", failPercantage);

        System.out.printf("Average: %.2f",(average / n));
    }
}