Bookstore Inventory and Sales Simulation

This problem simulates a bookstore inventory system. You will use two classes: Book and Sale. A Book is defined by its title, author, ISBN, price, and current stock. A Sale represents the sale of a given quantity of that book. A sale is successful if the Book has enough stock; if so, the sale will update the stock and compute the total sale price using the formula: $$total\_price = price \times quantity$$. Otherwise, the sale is rejected.

Your task is to simulate a series of sales operations on a single book. For each sale operation, if the sale is recorded, print the total price (formatted to one decimal place); if not, print 0.

inputFormat

The input is given from stdin and consists of several lines:

• The first line contains the title of the book (a string).
• The second line contains the author (a string).
• The third line contains the ISBN (a string).
• The fourth line contains the price (a floating point number).
• The fifth line contains the initial stock (an integer).
• The sixth line contains an integer Q, the number of sale transactions.
• Each of the next Q lines contains an integer representing the sale quantity for that transaction.

outputFormat

For each sale transaction, output a line:

• If the sale is successful (i.e. there is sufficient stock), output the total sale price computed as price * quantity formatted to one decimal place.
• If the sale cannot be completed due to insufficient stock, output 0.

The output should be printed to stdout.

## sample

The Great Gatsby
F. Scott Fitzgerald
978-0743273565
15.5
20
3
5
10
8

77.5
155.0
0

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