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汗，你怎么知道我想要的是O(V^3)的原始对偶，强……

Posted by wywcgs at 2007-10-23 12:43:26 on Problem 3422
In Reply To:果然一说网络流，lord wu 就神秘显身了，见内。。 Posted by:richardxx at 2007-10-23 12:00:11 
ssp好点是因为这道题的F很小吧，几乎可以当成常数了……
我没真正测试过primal-dual，总感觉效果不会太好，而且mincost flow里还要套一个maxflow我看着很不舒服……
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