max_bad_grades = int(input())

bad_grades_count = 0
total_ocenki = 0
problems_zadachi = 0
last_problem = None

while bad_grades_count < max_bad_grades:
    problem = input()

    if problem == 'Enough':
        break
    grade = int(input())
    if grade <= 4:
        bad_grades_count += 1

    total_ocenki += grade
    problems_zadachi += 1
    last_problem = problem


if bad_grades_count == max_bad_grades:
    print(f'You need a break, {bad_grades_count} poor grades.')

else:
    average = total_ocenki / problems_zadachi
    print(f'Average score: {average:.2f}')
    print(f'Number of problems: {problems_zadachi}')
    print(f'Last problem: {last_problem}')