graduation

student_name = input()
bad_grade_counter = 0
grade_counter = 1
sum_grades = 0
is_excluded = False
while grade_counter <= 12:
    grade_for_year = float(input())
    if grade_for_year < 4:
        bad_grade_counter += 1
        if bad_grade_counter == 2:
            is_excluded = True
            break
        else:
            continue
    grade_counter +=1
    sum_grades += grade_for_year
average_grade = sum_grades / 12
if is_excluded:
    print(f"{student_name} has been excluded at {grade_counter} grade")
else:
    print(f"{student_name} graduated. Average grade: {average_grade:.2f}")