Customer Service Queue Management

A customer service center has a queue of customers waiting for service. Each customer has a specific time they require for service. The service center can only serve one customer at a time. Given a list of customers with their respective service times and a predefined number of servers available, calculate the total time when the last customer is served. Input format: - The first line contains an integer N (1 ≤ N ≤ 1000) representing the number of customers. - The second line contains N space-separated integers where each integer represents the time required for each customer (1 ≤ time ≤ 100). - The third line contains an integer M (1 ≤ M ≤ 10) representing the number of servers available. Output format: - A single integer, representing the time when the last customer finishes being served. Example: Input: 5 10 2 3 5 7 2 Output: 15