07. Food Delivery

chicken_menu = int(input())
fish_menu = int(input())
vegetarian_menu = int(input())
delivery = 2.5

chicken_menu_price = chicken_menu * 10.35
fish_menu_price = fish_menu * 12.40
vegetarian_menu_price = vegetarian_menu * 8.15
total_menu_price = chicken_menu_price + fish_menu_price + vegetarian_menu_price
desert = total_menu_price * 0.2
total_price = total_menu_price + desert + delivery
print(total_price)