Library Book Management System

In this problem, you need to implement a simple library management system using two dictionaries: library_books and borrowed_books. You must implement the following operations:

• ADD book_title: Add a book to the library. This can be modeled as increasing the count of that book in library_books. In mathematical terms, if you denote the count of a book by \( library\_books[book\_title] \), then after adding a book, the update is: $$ library\_books[book\_title] = library\_books.get(book\_title,0) + 1 $$
• BORROW book_title user_name: A user attempts to borrow a book. If the book is available (i.e. its count in library_books is at least 1), then decrease the count by 1 and record the borrowing in borrowed_books with the user name. Print a success message in the format: {user_name} has borrowed {book_title}. If the book is not available, print Book not available.
• RETURN book_title: A user returns a book. If the book is currently borrowed (exists in borrowed_books), remove it from borrowed_books, add it back to the library (i.e. increase its count in library_books), and print a message: {user_name} has returned {book_title} (using the recorded user name). Otherwise, print This book was not borrowed.

After processing all commands, you should output the final state of library_books and borrowed_books as their dictionary representations.

inputFormat

The first line of input contains an integer T representing the number of operations. Each of the following T lines contains a command in one of the following forms:

• ADD book_title
• BORROW book_title user_name
• RETURN book_title

Note: In the test cases provided, book_title and user_name will be a single word without spaces.

outputFormat

For each command that produces an output (i.e. the BORROW and RETURN commands), print the corresponding message. After processing all commands, output the final state of library_books and borrowed_books dictionaries (each on a new line) using Python dictionary format.

## sample

3
ADD TheGreatGatsby
ADD 1984
BORROW 1984 Alice

Alice has borrowed 1984
{'TheGreatGatsby': 1}
{'1984': 'Alice'}

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