flowers_03_03

chrysanthemum = int(input())
roses = int(input())
tulips = int(input())
season = input()
holiday = input()


total_flowers = chrysanthemum + roses + tulips
total_price = 0

if season == "Spring" or season == "Summer":
    total_price += 2 * chrysanthemum
    total_price += 4.1 * roses
    total_price += 2.5 * tulips
    if tulips > 7 and season == "Spring":
        total_price *= 0.95

elif season == "Autumn" or season == "Winter":
    total_price += 3.75 * chrysanthemum
    total_price += 4.5 * roses
    total_price += 4.15 * tulips
    if roses >= 10 and season == "Winter":
        total_price *= 0.9

if holiday == "Y":
    total_price *= 1.15
if total_flowers > 20:
    total_price *= 0.8

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