ss

name = input()
classes = 1
sum_grade = 0
excluded = 0
is_excluded = False

while classes <= 12:
    grade = float(input())
    if grade >= 4:
        classes += 1
        sum_grade += grade
    else:
        excluded += 1
        if excluded == 2:
            is_excluded = True
            break

if is_excluded:
    print(f"{name} has been excluded at {classes} grade")
else:
    average_grade = sum_grade / 12
    print(f'{name} graduated. Average grade: {average_grade:.2f}')