flowers

hrisantemas = int(input())
roses = int(input())
tulips = int(input())
season = input()
holiday = input()
hrisantemas_price = 0
roses_price = 0
tulips_price = 0

if season == 'Spring' or season == 'Summer':
    hrisantemas_price = hrisantemas * 2.00
    roses_price = roses * 4.10
    tulips_price = tulips * 2.50

elif season == 'Autumn' or season == 'Winter':
    hrisantemas_price = hrisantemas * 3.75
    roses_price = roses * 4.50
    tulips_price = tulips * 4.15
if holiday == 'Y':
    hrisantemas_price += hrisantemas_price * 0.15
    tulips_price += tulips_price * 0.15
    roses_price += roses_price * 0.15
total_price = hrisantemas_price + roses_price + tulips_price
if tulips > 7 and season == 'Spring':
    total_price -= total_price * 0.05
if roses >= 10 and season == 'Winter':
    total_price -= total_price * 0.10

if hrisantemas + roses + tulips > 20:
    total_price -= total_price * 0.2
total_with_arranging = total_price + 2
print(f'{total_with_arranging:.2f}')