01. Cinema with "error"

type_ticket = input()
rows = int(input())
cols = int(input())

all_seats = rows * cols

is_valid_data = True
price = 0
if type_ticket == "Premiere":
    price = 12
elif type_ticket == "Normal":
    price = 7.5
elif type_ticket == "Discount":
    price = 5
else:
    is_valid_data = False

if is_valid_data == True:
    total_income = all_seats * price
    print(f"{total_income:.2f} leva")
else:
    print("error")