2012年9月6日
USACO Section 2.4 Overfencing（权值相等的最短路 ）
摘要： OverfencingKolstad and SchrijversFarmer John went crazy and created a huge maze of fences out in a field. Happily, he left out two fence segments on the edges, and thus created two "exits" for the maze. Even more happily, the maze he created by this overfencing experience is a `perfect' 阅读全文
posted @ 2012-09-06 10:10 mtry 阅读(330) 评论(0) 推荐(0)