3613.CowRelays求经过n条边的最短路,floyd+倍增QAQ[crayon-681d7591c093b050444358/]2728.DesertKing最优比率生成树分数规划[crayon-681d7591c0950070599774/]1639.PicnicPlanning带度数限制的最小生成树http://wenku.baidu.com/link?url=UKcnK1pZvaVwypQOrIFRTOPzM4edIlBmqvnZjZipGf2o_6u-aB1F2tFsMGdUQbA1O-96menmbgyxNoSoWKWBeJnr-RJKuG2yM4b6Jf7IvR3[crayon-681d7591c09...
Description Duetoalackofrain,FarmerJohnwantstobuildanirrigationsystemtosendwaterbetweenhisNfields(1<=N<=2000).Eachfieldiisdescribedbyadistinctpoint(xi,yi)inthe2Dplane,with0<=xi,yi<=1000.ThecostofbuildingawaterpipebetweentwofieldsiandjisequaltothesquaredEuclideandistancebetweenthem:(xi-xj)^2+(yi-yj)^2FJwouldliketobuildaminimum-costsystemofpipessothatallofhisfieldsarelinkedt...
近期评论