Customer Service Desk

You are simulating a customer service desk where customers wait to be served. Customers arrive at varying intervals. Each customer has a unique ID and a ticket number, which is the order they arrive. Your program should simulate the serving of customers based on the order of their ticket numbers. If a customer is served, they are removed from the queue. Your program should read a sequence of customers and print the order in which they were served. Example: Input: 5 1 1 2 4 3 2 4 3 5 5 Output: 1 3 4 2 5