Notes
This function is in beta test. Please help improve it in the issues
here.
Hints
Your answer may be identical to the JOJ answer in the first several lines.
However, you will still get Wrong Answer because the complete output may be longer and there might be errors in the future lines.
Please double check your code to solve this problem and try again.
Your Answer
Welcome to the library management system, please type your commands. > A book added to the system. > A book added to the system. > A customer added to the system. > A customer added to the system. > Success! A book is borrowed by A customer. > The book is not in the system. > Exit the system!
JOJ Answer
Welcome to the library management system, please type your commands. > A book added to the system. > A book added to the system. > A customer added to the system. > A customer added to the system. > Success! A book is borrowed by A customer. > 1 A book borrowed 2 A book on shelf > Exit the system!