Exam Preparation

import java.util.Scanner;

public class ExamPreparation {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        int badGrades = Integer.parseInt(scanner.nextLine());
        String name = scanner.nextLine();

        int sum = 0;
        int countBadGrades = 0;
        int tasks = 0;
        String last = "";


        while (!name.equals("Enough")) {
            int grade = Integer.parseInt(scanner.nextLine());
            sum += grade;
            tasks++;
            if (grade <= 4) {
                countBadGrades++;
            }
            if (badGrades == countBadGrades) {
                System.out.printf("You need a break, %d poor grades.", countBadGrades);
                break;
            }
            last = name;
            name = scanner.nextLine();

            if (name.equals("Enough")) {
                double average = sum * 1.0 / tasks;
                System.out.printf("Average score: %.2f%n", average);
                System.out.printf("Number of problems: %d%n", tasks);
                System.out.printf("Last problem: %s ", last);
            }
        }


    }
}