Задача №5

product = input().lower()
town = input().lower()
quantity = float(input())
result = 0

if town == "sofia":
    if product == 'coffee':
        result = quantity * 0.50
    elif product == 'water':
        result = quantity * 0.80
    elif product == 'beer':
        result = quantity * 1.20
    elif product == 'sweets':
        result = quantity * 1.45
    elif product == 'peanuts':
        result = quantity * 1.60


elif town == "plovdiv":
    if product == 'coffee':
        result = quantity * 0.40
    elif product == 'water':
        result = quantity * 0.70
    elif product == 'beer':
        result = quantity * 1.15
    elif product == 'sweets':
        result = quantity * 1.30
    elif product == 'peanuts':
        result = quantity * 1.50


elif town == "varna":
    if product == 'coffee':
        result = quantity * 0.45
    elif product == 'water':
        result = quantity * 0.70
    elif product == 'beer':
        result = quantity * 1.10
    elif product == 'sweets':
        result = quantity * 1.35
    elif product == 'peanuts':
        result = quantity * 1.55

print("{0:.2f}".format(result))