A barber-shop consists of a waiting room with n chairs, and the barber room containing the barber chair. If there are no customers to be served the barber goes to sleep. If a customer enters the barber-shop and all chairs are occupied, then the customer leaves the shop. If the barber is busy, then the customer sits in one of the available free chairs. If the barber is asleep, the customer wakes the barber up. Write a monitor for solving the sleepy barber problem.

PLEASE USE MONITORS FOR THE SOLUTION!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!