import java.util.Scanner;

public class ExamPreparation {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int badMarks = Integer.parseInt(scanner.nextLine());
        String problemName = scanner.nextLine();
        int grade = Integer.parseInt(scanner.nextLine());

        int failedAttempts = 0;
        int solvedProblemsCount = 0;
        double gradesSum = 0;
        String lastProblem = "";
        boolean isFailed = true;


        while (failedAttempts < badMarks) {
            problemName = scanner.nextLine();
            if ("Enough".equals(problemName)){
                isFailed = false;
                break;
        }else {
                isFailed = true;
            }
            grade = Integer.parseInt(scanner.nextLine());
            if (grade<=4){
                failedAttempts++;
            }gradesSum+=grade;
            solvedProblemsCount++;
            lastProblem = problemName;
        } if (isFailed){
            System.out.printf("You need a break, %d poor grades.", badMarks);
        } else {
            System.out.printf("Average score: %.2f%n", gradesSum/solvedProblemsCount);
            System.out.printf("Number of problems: %d%n", solvedProblemsCount);
            System.out.printf("Last problem: %s", lastProblem);
        }
    }
}