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Re:突然喜从天降,就ac了,哈

Posted by 380757580 at 2008-07-16 16:27:07 on Problem 2190
In Reply To:Re:突然喜从天降,就ac了,哈 Posted by:ffantasy at 2008-04-04 02:07:54
我WAWAWA了n次才发现,原来如果无法成立就输出-1

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