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poj 2485(prim最小生成树)
HighwaysDescriptionThe 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 · 753 阅读 · 0 评论 -
poj 1258
Agri-NetTime Limit: 1000MS Memory Limit: 10000KTotal Submissions: 38805 Accepted: 15674DescriptionFarmer John has been elected mayor of his town! One of his campa原创 2014-07-21 12:23:58 · 677 阅读 · 0 评论