ggg

name_of_student = input()

sum_grades = 0.0
average_grade = 0.0
excluded = 0
class_of_student = 1

while class_of_student <= 12:
    grade = float(input())

    if grade >= 4:
        class_of_student += 1
        sum_grades += grade
    else:
        excluded += 1

        if excluded > 1:
            print(f'{name_of_student} has been excluded at {class_of_student} grade ')
            break

if excluded < 2:
    average_grade = sum_grades / 12
    print(f'{name_of_student} graduated. Average grade: {average_grade:.2f}')