computer_firm

number_of_pc_models = int(input())
total_sales = 0
total_rating = 0
for each_pc_model in range(number_of_pc_models):
    number = int(input())
    rating = number % 10
    sales = number // 10
    if rating == 2:
        sales = 0
    elif rating == 3:
        sales /= 2
    elif rating == 4:
        sales *= 0.7
    elif rating == 5:
        sales *= 0.85
    total_sales += sales
    total_rating += rating
average_rating = total_rating / number_of_pc_models
print(f'{total_sales:.2f}')
print(f'{average_rating:.2f}')