03. Flowers

chrysanthemums = int(input())
roses = int(input())
tulips = int(input())
season = input()
holyday = input()

if season == "Spring":
  chrysanthemums_price = chrysanthemums * 2
  roses_price = roses * 4.1
  tulips_price = tulips * 2.5
  bouquet = chrysanthemums_price + roses_price + tulips_price
  if tulips > 7:
    bouquet *= 0.95
  if chrysanthemums + roses + tulips > 20:
    bouquet *= 0.8
elif season == "Summer":
  chrysanthemums_price = chrysanthemums * 2
  roses_price = roses * 4.1
  tulips_price = tulips * 2.5
  bouquet = chrysanthemums_price + roses_price + tulips_price
  if chrysanthemums + roses + tulips > 20:
    bouquet *= 0.8
elif season == "Autumn":
  chrysanthemums_price = chrysanthemums * 3.75
  roses_price = roses * 4.5
  tulips_price = tulips * 4.15
  bouquet = chrysanthemums_price + roses_price + tulips_price
  if chrysanthemums + roses + tulips > 20:
      bouquet *= 0.8
else:
  chrysanthemums_price = chrysanthemums * 3.75
  roses_price = roses * 4.5
  tulips_price = tulips * 4.15
  bouquet = chrysanthemums_price + roses_price + tulips_price
  if roses >= 10:
      bouquet *= 0.9
  if chrysanthemums + roses + tulips > 20:
    bouquet *= 0.8

if holyday == "Y":
  bouquet *= 1.15

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