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Description Bear Limak prepares problems for a programming competition. Of course, it would be unprofessional to mention the sponsor name in the state 阅读全文
摘要：
Description A tree is an undirected connected graph without cycles. The distance between two vertices is the number of edges in a simple path between 阅读全文
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Description In the army, it isn't easy to form a group of soldiers that will be effective on the battlefield. The communication is crucial and thus no 阅读全文
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Description Bear Limak examines a social network. Its main functionality is that two members can become friends (then they can talk with each other an 阅读全文
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Description Bear Limak wants to become the largest of bears, or at least to become larger than his brother Bob. Right now, Limak and Bob weigh a and b 阅读全文