13

days = int(input())
type_room = input()
opinion = input()

# total_sum                     nights = days - 1 * 1 night price (room)
# discount for the days / room
# discount from the opinion
# print (total_sum)

nights = days - 1
price_per_night = 0

if type_room == "room for one person":
    price_per_night = 18
elif type_room == " apartment":
    price_per_night = 25
elif type_room == "president apartment":
    price_per_night = 35

total_price = nights * price_per_night  # without discounts

# discount 1

if type_room == "apartment":
    if days < 10:
        total_price = total_price - 0.30 * total_price    # total_price = total_price * 0.70
    elif 10 <= days <= 15:
        total_price = total_price - 0.35 * total_price
    elif days > 15:
        total_price = total_price - 0.50 * total_price
elif type_room == "president apartment":
    if days < 10:
        total_price = total_price - 0.10 * total_price    # total_price = total_price * 0.90
    elif 10 <= days <= 15:
        total_price = total_price - 0.15 * total_price
    elif days > 15:
        total_price = total_price - 0.20 * total_price

# discount 2

if opinion == "positive":
    total_price = total_price + 0.25 * total_price   # total_price = total_price * 1.25
elif opinion == "negative":
    total_price = total_price - 0.10 * total_price

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