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());

        int moreThan5 = 0;
        int moreThan4 = 0;
        int moreThan3 = 0;
        int lessThan3 = 0;

        double markResult = 0;

        for (int i = 1; i <= students; i++) {
            double mark = Double.parseDouble(scanner.nextLine());
            if (mark >= 5.00) {
                moreThan5++;
            } else if (mark >= 4.00) {
                moreThan4++;
            } else if (mark >= 3.00) {
                moreThan3++;
            } else {
                lessThan3++;
            }
            markResult += mark;
        }

        double topStudents = 100.0 * moreThan5 /  students;
        double fourStudents = 100.0 * moreThan4 /  students;
        double threeStudents = 100.0 * moreThan3 / students;
        double twoStudents = 100.0 * lessThan3 /  students;

        System.out.printf("Top students: %.2f%%%n", topStudents);
        System.out.printf("Between 4.00 and 4.99: %.2f%%%n", fourStudents);
        System.out.printf("Between 3.00 and 3.99: %.2f%%%n", threeStudents);
        System.out.printf("Fail: %.2f%%%n", twoStudents);
        System.out.printf("Average: %.2f", markResult / students);
    }
}