13. Ski Trip

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

#1. крайна цена = бр. нощувки (дни - 1) * цена за 1 нощувка (стаята)
# 2. отстъпка спрямо дните и стаята
# 3. отстъпка спрямо оценката(мнението)
# 4. печатаме сумата

#крайна цена
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 # крайна цена без намаление


# намаление 1
if type_room == "apartment":
    if days < 10:
        total_price = total_price - 0.30 * total_price
        #total_price = 0.7 * total_price
    elif 10 <= days <= 15:
        total_price = total_price - 0.35 * total_price
        # total_price = 0.65 * total_price
    elif days > 15:
        total_price = total_price - 0.50 * 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 = 0.9 * total_price
    elif 10 <= days <= 15:
        total_price = total_price - 0.15 * total_price
        # total_price = 0.85 * total_price
    elif days > 15:
        total_price = total_price - 0.20 * total_price
        # total_price = 0.80 * total_price

# намаление 2
if opinion == "positive":
    total_price = total_price + 0.25 * total_price
    # total_price = 1.25 * total_price
elif opinion == "negative":
    total_price = total_price - 0.10 * total_price
    # total_price = 0.9 * total_price


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