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题目的意思和要注意的地方

Posted by tzzhwj at 2008-11-13 19:59:47 on Problem 3272
题目意思:
由入度为0的点到目标点的所有路径中使用最频繁那条边总共使用的次数

注意:
(1)题目可以有重边
(2)暴力枚举所有通向目标点的路径再统计边的重复数目,会超时
(3) F[i] 为入度为0的点到i的路径条数
      G[i] 为i到N的路径条数
(4)求F的时候由编号小的点向编号大的点递推。G的时候由编号大的点向编号小的点递推。F[i]的值是指向它的所有结点的F值的和。G[i]的值是指向的所有结点的所有G值的和

大家共同努力吧

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