count_chrysanthemums = int(input())
count_roses = int(input())
count_tulips = int(input())
season = input()
day_off = input()

price_bouquet = 0

if season == "Spring" or season == "Summer":
    if day_off == "Y":
        price_bouquet = (count_chrysanthemums * 2 + count_roses * 4.10 + count_tulips * 2.50) * 1.15
    else:
        price_bouquet = count_chrysanthemums * 2 + count_roses * 4.10 + count_tulips * 2.50
    if count_tulips > 7 and season == "Spring":
        price_bouquet = price_bouquet * 0.95
    else:
        price_bouquet = price_bouquet * 1

elif season == "Autumn" or season == "Winter":
    price_bouquet = count_chrysanthemums * 3.75 + count_roses * 4.50 + count_tulips * 4.15
    if day_off == "Y":
        price_bouquet = price_bouquet * 1.15
    else:
        price_bouquet = count_chrysanthemums * 3.75 + count_roses * 4.50 + count_tulips * 4.15
    if count_roses >= 10 and season == "Winter":
        price_bouquet = price_bouquet * 0.90
    else:
        price_bouquet = count_chrysanthemums * 3.75 + count_roses * 4.50 + count_tulips * 4.15

count_flowers = count_chrysanthemums + count_roses + count_tulips
if count_flowers > 20:
    price_bouquet = price_bouquet * 0.80
else:
    price_bouquet = price_bouquet * 1

final_price = price_bouquet + 2

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