1. fruit = input()
2. day_of_week = input()
3. quantity = float(input())
4.  
5. price = 0
6.  
7. if day_of_week == "Monday" or day_of_week == "Tuesday" or day_of_week == "Wednesday" or day_of_week == "Thursday"\
8.         or day_of_week == "Friday":
9.     if fruit == "banana":
10.         price = 2.5
11.     elif fruit == "apple":
12.         price = 1.2
13.     elif fruit == "orange":
14.         price = 0.85
15.     elif fruit == "grapefruit":
16.         price = 1.45
17.     elif fruit == "kiwi":
18.         price = 2.7
19.     elif fruit == "pineapple":
20.         price = 5.5
21.     elif fruit == "grapes":
22.         price = 3.85
23.  
24. elif day_of_week == "Saturday" or day_of_week == "Sunday":
25.     if fruit == "banana":
26.         price = 2.7
27.     elif fruit == "apple":
28.         price = 1.25
29.     elif fruit == "orange":
30.         price = 0.9
31.     elif fruit == "grapefruit":
32.         price = 1.60
33.     elif fruit == "kiwi":
34.         price = 3.00
35.     elif fruit == "pineapple":
36.         price = 5.6
37.     elif fruit == "grapes":
38.         price = 4.2
39. if price == 0.00:
40.     print("error")
41. else:
42.     sum = (f'{price * quantity:.2f}')
43.     print(sum)
44.