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我就是这样建的图啊,思路一样,死都过不了

Posted by E09610125 at 2010-07-13 09:11:28 on Problem 1087
In Reply To:我的一些理解 Posted by:whenmary at 2008-08-29 00:38:53
> 我的算法不是很高效,32ms跑过。不知道他们0ms的怎么过的。。。我没有用floyd,只用了最大流。
> 源点到每个插座容量为一的边;如果插座a能变成b,那么a到b有一条无限量的边,
> 物品x需要插座a,那么a到x一条容量无限的边,所有物品到汇一条容量为1的边,最后一个最大流,
> 流量就是最多可以插上多少物品
> 源点编号为0,最多可能有400种插座,
> 那么物品就从400开始吧,最后汇就是500

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