задачата

paint = int(input())
wallpaper = int(input())
price_of_gloves = float(input())
price_of_paintbrush = float(input())

price_of_paint = 21.50 * paint
price_of_wallpaper = 5.20 * wallpaper
number_of_gloves = wallpaper * 0.35
number_of_paintbrushes = paint * 0.48
total_price_of_gloves = number_of_gloves * price_of_gloves
total_price_of_paintbrushes = number_of_paintbrushes * price_of_paintbrush
total_sum = price_of_paint + price_of_wallpaper + total_price_of_gloves + total_price_of_paintbrushes
delivery_price = total_sum / 15
print(f"This delivery will cost {delivery_price:2f} lv.")