POJ 3259 Wormholes(spfa判负环)
摘要：
WormholesDescriptionWhile exploring his many farms, Farmer John has discovered a number of amazing wormholes. A wormhole is very peculiar because it i... 阅读全文
posted @ 2015-08-19 11:01 焰 阅读(164) 评论(0) 推荐(0) 编辑