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题目说得有些含糊,敲题时只记着等概率射...我WA了吐槽下而已

Posted by lzs1991 at 2011-12-21 21:45:21 on Problem 3028
In Reply To:请好好看题,题中说明了的,英语不行用Google Posted by:MyIdea at 2011-12-21 21:01:36
rt

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