程序代写代做代考 # Assumptions

# Assumptions

– A borrower may borrow a book copy of a certain barcode on a specific day at most once.

– A borrower may return a book copy of a certain barcode on a specific day at most once.

– A borrower may reserve a book copy of a certain barcode on a specific day at monst once.

– Number of borrowers less than 1e10

– Number of branches less than 1e10

– Number of managers less than 1e10

– Branch name no more than 100 characters

– Phone number has 10 characters

– Number of editions less than 1000