Implement a Book Issue Context Manager

You are required to implement two classes: Book and IssueBook. A Book object has a title and an issued flag which is initially set to false. The class IssueBook acts as a context manager (or its equivalent in your language) that sets the book's issued flag to true when entering the context, and resets it to false when exiting the context, no matter if an exception occurred or not.

In particular, your implementation should satisfy the following conditions:

• When a Book is created, its issued flag should be false.
• When using the context manager on a book, inside the context the issued flag must be true.
• Upon exiting the context (even if an exception is thrown inside the context), the issued flag must be reset to false.
• In the case of managing multiple books, only the book associated with the current context should have its issued flag set to true inside the context, while the other remains unchanged.

Note: If your language supports automatic resource management (such as RAII, try-with-resources, or context managers), make sure to use it appropriately.

For any formulas required, use the LaTeX format. (There is no mathematical formula needed in this problem.)

inputFormat

The input is read from standard input (stdin). The first line contains an integer T representing the number of test scenarios. Each test scenario starts with a command type (one of INIT, CONTEXT, MULTIPLE, or EXCEPTION), followed by the required number of lines as described below:

• INIT: Followed by one line containing the book title. You must create a Book object and output its issued status.
• CONTEXT: Followed by one line containing the book title. Create a Book object, then simulate using the IssueBook context manager by printing the issued status inside the context and then printing the status after the context is exited.
• MULTIPLE: Followed by two lines, each containing a book title. Create two Book objects. Then, use the context manager only on the first book. Print the issued status of both books inside the context, then again print the issued statuses after the context.
• EXCEPTION: Followed by one line containing the book title. Create a Book, then simulate entering the context and immediately throw an exception (simulate this in your code). Catch the exception and then print the issued status after the context has exited. Also print the issued status while inside the context before the exception is thrown.

All outputs should be printed to standard output (stdout), one result per line.

Example Input:

4
INIT
The Great Gatsby
CONTEXT
The Great Gatsby
MULTIPLE
1984
To Kill a Mockingbird
EXCEPTION
The Catcher in the Rye

outputFormat

For each test scenario, output the issued status of the book(s) as described below, each on a new line:

• INIT: Output one line: False.
• CONTEXT: Output two lines. The first line should be True (inside the context) and the second line False (after exiting the context).
• MULTIPLE: Output four lines. The first two lines are the statuses inside the context: the first book should be True and the second False. The next two lines are the statuses after the context: both should be False.
• EXCEPTION: Output two lines. The first line is True (inside the context before the exception) and the second line is False (after exiting the context, even after an exception).

## sample

4
INIT
The Great Gatsby
CONTEXT
The Great Gatsby
MULTIPLE
1984
To Kill a Mockingbird
EXCEPTION
The Catcher in the Rye

False
True
False
True
False
False
False
True
False

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