08. Ski Trip

days = int(input())
accommodation = input()
feedback = input()

nights = days - 1

if accommodation == "room for one person":
    discounted_price = nights * 18
elif accommodation == "apartment":
    if days < 10:
        discount = 0.3
        discounted_price = (nights * 25) * (1 - discount)
    elif 10 <= days <= 15:
        discount = 0.35
        discounted_price = (nights * 25) * (1 - discount)
    elif 15 < days:
        discount = 0.5
        discounted_price = (nights * 25) * (1 - discount)
elif accommodation == "president apartment":
    if days < 10:
        discount = 0.1
        discounted_price = (nights * 35) * (1 - discount)
    elif 10 <= days <= 15:
        discount = 0.15
        discounted_price = (nights * 35) * (1 - discount)
    elif 15 < days:
        discount = 0.2
        discounted_price = (nights * 35) * (1 - discount)

if feedback == "positive":
    total_price = discounted_price * (1 + 0.25)
elif feedback == "negative":
    total_price = discounted_price * (1 - 0.1)

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