02. Exam Preparation

import java.util.Scanner;

public class ExamPreparation {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int  lowGradesLimit= Integer.parseInt(scanner.nextLine());
        int failedCount = 0;
        int gradesCount = 0;
        double ratioSum= 0;
        String lastExam = "";
        boolean tired = false;
        while (failedCount<lowGradesLimit){
            String examName = scanner.nextLine();
            if ("Enough".equals(examName)){
                tired = true;
                break;
            }
            int examScore = Integer.parseInt(scanner.nextLine());
            if(examScore <=4){
                failedCount++;
            }
            ratioSum+=examScore;
            gradesCount++;
            lastExam=examName;
        }
        double ratioSumTotal = ratioSum /gradesCount;
        if(!tired){
            System.out.printf("You need a break, %d poor grades.",lowGradesLimit);
        }else{
            System.out.printf("Average score: %.2f%n",ratioSumTotal);
            System.out.printf("Number of problems: %d%n",gradesCount);
            System.out.printf("Last problem: %s",lastExam);
        }
    }
}