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Re:可以用反证法。假设不是在中点位置,你取其他位置算出来的距离和在中点位置的距离减一下,会发现一个大于0的式子

Posted by 306469974 at 2013-03-14 21:20:59 on Problem 1160
In Reply To:可以用反证法。假设不是在中点位置,你取其他位置算出来的距离和在中点位置的距离减一下,会发现一个大于0的式子 Posted by:yygy at 2013-03-10 08:54:55
我想说的是DP的递推式,怎么就能从两个分段最优,推出合在一起最优

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