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POJ - 3255 Roadblocks (次短路径)
DescriptionBessie has moved to a small farm and sometimes enjoys returning to visit one of her best friends. She does not want to get to her old home too quickly, because she likes the scenery along ...原创 2019-07-28 19:22:19 · 246 阅读 · 0 评论 -
POJ - 1135 / ZOJ - 1298 (最短路,diijkstra)
DescriptionDid you know that you can use domino bones for other things besides playing Dominoes? Take a number of dominoes and build a row by standing them on end with only a small distance in betwee...原创 2019-07-28 20:40:05 · 214 阅读 · 0 评论 -
POJ - 3259 Wormholes (spfa,负权回路)
DescriptionWhile exploring his many farms, Farmer John has discovered a number of amazing wormholes. A wormhole is very peculiar because it is a one-way path that delivers you to its destination at a...原创 2019-07-28 20:52:46 · 134 阅读 · 0 评论 -
POJ - 1094 (拓扑排序)
DescriptionAn ascending sorted sequence of distinct values is one in which some form of a less-than operator is used to order the elements from smallest to largest. For example, the sorted sequence A...原创 2019-07-28 21:08:44 · 147 阅读 · 0 评论 -
POJ - 2230 Watchcow (欧拉回路)
DescriptionBessie’s been appointed the new watch-cow for the farm. Every night, it’s her job to walk across the farm and make sure that no evildoers are doing any evil. She begins at the barn, makes ...原创 2019-07-28 21:35:38 · 146 阅读 · 0 评论