Description: Our School Building North Building has two elevators. Such as elevators were given to the signal from top to bottom, the lift only when the idle or the same direction when the road to accept this command. However, the elevators are often very crowded, particularly in the last class when we have to wait a very long time, so many complain about the sound. Are you able to lift the design of a scheduling scheme to reduce the waiting time for everyone to reduce the dissatisfaction of the teachers and students.
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