Grades

import java.util.Scanner;

public class Grades {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int studentsCount = Integer.parseInt(scanner.nextLine());
        double students = studentsCount;
        double grade = 0;
        int studentsUnder299Count = 0;
        int studentsUnder399Count = 0;
        int studentsUnder499Count = 0;
        int excellentStudentsCount = 0;
        for (int i = 1; i <= students ; i++) {
            double examGrade = Double.parseDouble(scanner.nextLine());
            if (examGrade < 3) {
                grade += examGrade;
                studentsUnder299Count++;
            }else if (examGrade < 4) {
                grade += examGrade;
                studentsUnder399Count++;
            }else if (examGrade < 5) {
                grade += examGrade;
                studentsUnder499Count++;
            }else {
                grade += examGrade;
                excellentStudentsCount++;
            }
        }
        double averageGrade = grade / students;
        double excellentPercent = excellentStudentsCount / students * 100;
        double under5 = studentsUnder499Count /students * 100;
        double under4 = studentsUnder399Count /students * 100;
        double under3 = studentsUnder299Count /students * 100;
        System.out.printf("Top students: %.2f%%%n",excellentPercent);
        System.out.printf("Between 4.00 and 4.99: %.2f%%%n",under5);
        System.out.printf("Between 3.00 and 3.99: %.2f%%%n",under4);
        System.out.printf("Fail: %.2f%%%n",under3);
        System.out.printf("Average: %.2f",averageGrade);


    }
}