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poj 2485(prim最小生成树)
Highways Description The island nation of Flatopia is perfectly flat. Unfortunately, Flatopia has no public highways. So the traffic is difficult in Flatopia. The Flatopian government is aware原创 2014-07-21 13:20:04 · 746 阅读 · 0 评论 -
poj 1258
Agri-Net Time Limit: 1000MS Memory Limit: 10000K Total Submissions: 38805 Accepted: 15674 Description Farmer John has been elected mayor of his town! One of his campa原创 2014-07-21 12:23:58 · 671 阅读 · 0 评论