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
> added to the system. > Unknown command! > Unknown command! > The Book ID already exists. > Unknown command! > Unknown command! > added to the system. > Unknown command! > Unknown command! > The book not existed. > Unknown command! > Unknown command! > Book borrowed by No books borrowed by given customer id > Unknown command! > No such book existed > Unknown command! > The book not existed. > Unknown command! > Unknown command! > Book borrowed by -1777 > Unknown command! > No such book existed > Unknown command! > -539 > Exit the system!
JOJ Answer
Welcome to the library management system, please type your commands. > b1 added to the system. > b2 added to the system. > c1 added to the system. > Success! b1 is borrowed by c1. > Book borrowed by c1: 1 b1 > 1 b1 borrowed > Success! b2 is borrowed by c1. > Book borrowed by c1: 1 b1 2 b2 > 2 b2 borrowed > 1 c1 > Exit the system!