02. Exam Preparation

number_bad_grades = int(input())
counter_exercises = 0
counter_bad_grades = 0
sum_all_grades = 0
last_exersices_name = ''

while counter_bad_grades < number_bad_grades:
    exercise = input()
    if exercise == "Enough":
        print(f"Average score: { (sum_all_grades / counter_exercises):.2f}")
        print(f"Number of problems: {counter_exercises}")
        print(f"Last problem: {last_exersices_name}")
        break
    grade = int(input())

    sum_all_grades += grade
    counter_exercises += 1
    last_exersices_name = exercise

    if grade <= 4:
        counter_bad_grades += 1
        last_exersices_name = exercise

    if counter_bad_grades == number_bad_grades:
        print(f"You need a break, {number_bad_grades} poor grades.")
        break