poj2245.Lotto裸搜索[crayon-68c28f92ce9ca392608573/]poj2601.Simplecalculations推公式麻烦。。直接二分[crayon-68c28f92ce9d3824349270/]poj1635.Subwaytreesystems树的同构,哈希[crayon-68c28f92ce9d8071765228/]poj2419.Forests暴力即可[crayon-68c28f92ce9dd232590215/]poj1717.Dominoesdp水题[crayon-68c28f92ce9e3604145660/]poj2949.WordRings建图+分数规划[crayon-68c28f92ce9e9335618775/] ...
DescriptionBessiehastwocrispredapplestodelivertotwoofherfriendsintheherd.Ofcourse,shetravelstheC(1<=C<=200,000)cowpathswhicharearrangedastheusualgraphwhichconnectsP(1<=P<=100,000)pasturesconvenientlynumberedfrom1..P:nocowpathleadsfromapasturetoitself,cowpathsarebidirectional,eachcowpathhasanassociateddistance,and,bestofall,itisalwayspossibletogetfromanypasturetoanyotherpasture....
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