 Sleeping barber problem

The Sleeping Barber problem is a classic example of a synchronization problem in computer science and operating systems, particularly related to the concept of concurrency. It illustrates how to manage multiple processes in a way that avoids deadlocks and ensures resource sharing. ### Scenario: Imagine a barber shop with one barber, one chair for the barber to cut hair, and a waiting room with a limited number of chairs for customers.