Pastry

pastry = input()
ordered_pastries = int(input())
day = int(input())
price_before = 0
price = 0
discount2 = 0
discount = 0

if day <= 15:
    if pastry == "Cake":
        price_before = ordered_pastries * 24
    if pastry == "Souffle":
        price_before = ordered_pastries * 1.66
    if pastry == "Baklava":
        price_before = ordered_pastries * 12.60
if day > 15:
    if pastry == "Cake":
        price_before = ordered_pastries * 28.70
    if pastry == "Souffle":
        price_before = ordered_pastries * 9.80
    if pastry == "Baklava":
        price_before = ordered_pastries * 16.98
    else:
        pass
else:
    pass

if day <= 22:
    if 100 < price_before < 200:
        discount = price_before * 0.15
        price = price_before - discount
    elif price_before > 200:
        discount = price_before * 0.25
        price = price_before - discount
    else:
        discount = 0
        price = price_before - discount
elif day > 22:
    discount = 0
    price = price_before - discount
else:
    pass

if day <= 15:
    discount2 = price * 0.10
    price = price - discount2
elif day > 15:
    discount2 = 0
    price = price - discount2
else:
    pass
print(f'{price:.2f}')