03. Flowers

chrysanthemums = int(input())
roses = int(input())
tulips = int(input())
season = str(input()).lower()
holiday = input().lower()

bouquet = chrysanthemums + roses + tulips  # брой цветя
flowers_price = 0 #  цена на букетът

if season == 'spring' or season == 'summer':
    flowers_price += chrysanthemums * 2.00
    flowers_price += roses * 4.10
    flowers_price += tulips * 2.50
elif season == 'autumn' or season == 'winter':
    flowers_price += chrysanthemums * 3.75
    flowers_price += roses * 4.50
    flowers_price += tulips * 4.15

if holiday == 'y':
    flowers_price *= 1.15
if tulips > 7 and season == 'spring':
    flowers_price *= 0.95
if roses >= 10 and season == 'winter':
    flowers_price *= 0.90
if bouquet > 20:
    flowers_price *= 0.80

print('%.2f' % (flowers_price + 2))