Consider that Vancouver implements the use of shared self-driving bikes. Consider that bikes are for a single person use. Users can take a bike at a loading station. If a bike is available, a user registers with a valid credit card and takes the bike and uses it for a random time. The user can abandon the bike (e.g. when arriving home) and the bike will return at the loading session and wait for users. The bike has an artificial intelligence component. The bike will not start the credit card is valid. The bike will not leave the loading station without a passenger. Consider that there are 150 bikes at a loading station. (Operating Systsem)

1. Write the synchronization solution for the above problem with semaphores.