04. Grades

import java.util.Scanner;

public class Grades {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int students = Integer.parseInt(scanner.nextLine());
        double grade3 = 0, grade4 = 0, grade5 = 0, grade6 = 0, gradeSum = 0;

        for (int i = 0; i < students; i++) {
            double grade = Double.parseDouble(scanner.nextLine());
            if (grade >= 5) {
                grade6++;
            } else if (grade >= 4) {
                grade5++;
            } else if (grade >= 3) {
                grade4++;
            } else if (grade >= 2) {
                grade3++;
            }
            gradeSum += grade;
        }

        System.out.printf("Top students: %.2f%%\n", grade6 / students * 100);
        System.out.printf("Between 4.00 and 4.99: %.2f%%\n", grade5 / students * 100);
        System.out.printf("Between 3.00 and 3.99: %.2f%%\n", grade4 / students * 100);
        System.out.printf("Fail: %.2f%%\n", grade3 / students * 100);
        System.out.printf("Average: %.2f\n", gradeSum / students);
    }
}