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接线员的数学期望概率 2015-05-10 14:20:36 Pikachu
到底是接线员接电话的概率，还是接线员接电话次数的期望，或者其他什么的？给点提示啊
Re:接线员的数学期望概率 2015-05-10 15:46:53 admin
见hint, 是次数的比例
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University of Science and Technology of China
Online Judge for ACM/ICPC
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