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好象是IPSC的那个题吧。。。

Posted by jyx at 2006-04-03 19:45:42 on Problem 2790
In Reply To:“PSC有一年出了consecutive ones problem,从而引起了选手们对PQ树和平面图判定的关注。”——引自牛人的blog。是说的这个题么......?? Posted by:palmtenor at 2006-04-03 19:30:12


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