05. ComputerFirm

# 05. ComputerFirm
import math
computers = int(input())
sales = 0
sum_rating = 0
i = 0
while i < computers:
    r = int(input())
    rating = r % 10
    possible_sales = r / 10
    sum_rating += rating
    if rating == 2:
        sales += 0
    elif rating == 3:
        sales += math.floor(possible_sales) * 0.5
    elif rating == 4:
        sales += math.floor(possible_sales) * 0.7
    elif rating == 5:
        sales += math.floor(possible_sales) * 0.85
    elif rating == 6:
        sales += math.floor(possible_sales)
    i += 1
avg_rating = sum_rating / computers
print(f"{math.floor(sales):.2f}")
print(f"{avg_rating:.2f}")