03. Pastry Shop

cake = input()
number_of_cakes = int(input())
date = int(input())
price = 0

if date <= 15:
    if cake == "Cake":
        price = 24 * number_of_cakes
    elif cake == "Souffle":
        price = 6.66 * number_of_cakes
    elif cake == "Baklava":
        price = 12.6 * number_of_cakes
elif date > 15:
    if cake == "Cake":
        price = 28.7 * number_of_cakes
    elif cake == "Souffle":
        price = 9.8 * number_of_cakes
    elif cake == "Baklava":
        price = 16.98 * number_of_cakes

if date <= 22:
    if 100 <= price <= 200:
        price *= 0.85
    elif price > 200:
        price *= 0.75

if date <= 15:
    price *= 0.9

print(f"{price:.2f}")