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You are a city planner working for a metropolitan area with a complex road network. The city has recently expanded, and there is a need

You are a city planner working for a metropolitan area with a complex road
network. The city has recently expanded, and there is a need to establish a centralized
emergency service station (such as a fire station, hospital, or police station) that can be
quickly accessed from any intersection in the city.
The city has a mix of one-way and two-way streets, all of equal length. To ensure that
emergency response times are minimized, you need to identify a strategic location for this
emergency service station. Write an algorithm to determine if there exists an intersection as
emergency service station in the city that can be reached from every other intersection, or to
conclude that no such intersection exists.

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