Design an Elevator Control System

This elevator control system is designed for a 10-story building served by four independent elevators, utilizing a centralized, command-driven architecture. All requests, whether from a floor button or inside an elevator car, are sent immediately as a command packet (e.g., [timestamp, control_panel_id, target_floor]) to a Central System. The core function of this Central System is to maintain the real-time state of all four elevators and the global floor requests. Upon receiving a command, it applies a dynamic scheduling algorithm to determine which elevator can most efficiently fulfill the request, aiming to minimize passenger wait and travel times, before dispatching the chosen elevator to its next destination.