gg

total_bad_grades = int(input())
command = input()
number_grades = 0
bad_grades = 0
sum_grade = 0
task_name = ''

while command != 'Enough':
    task_name = command
    grade = int(input())
    number_grades += 1
    if grade <= 4:
        bad_grades += 1
        if bad_grades == total_bad_grades:
            break
    sum_grade += grade
    command = input()


if bad_grades == total_bad_grades:
    print(f"You need a break, {bad_grades} poor grades.")
else:
    average_grade = sum_grade / number_grades
    print(f'Average score: {average_grade:.2f}')
    print(f"Number of problems: {number_grades}")
    print(f"Last problem: {task_name}")