04. Train The Trainers

score_num = int(input())
counter = 0
total = 0

while True:
    presentation = input()
    if presentation == 'Finish':
        break
    grade = 0
    for i in range(score_num):
        grade += float(input())
    print(f'{presentation} - {grade / score_num:.2f}.')
    counter += score_num
    total += grade

print(f'Student\'s final assessment is {total / counter:.2f}.')