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高手指点一下,这题有什么需要特别注意的地方,总是WA.每5分钟队列的第一个人进入电梯,这每5分钟是从什么时候开始算起的每5分钟? 觉得自己没有完全把题看懂 哪位能够解释一下. Followed by:
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