摘要：
In this problem, `lattice points' in the plane are points with integer coordinates. In order to contain his cows, Farmer John constructs a triangular 阅读全文
posted @ 2017-01-02 18:31
sigongzi
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You just inherited the rights to N (1 <= N <= 20) previously unreleased songs recorded by the popular group Raucous Rockers. You plan to release a set 阅读全文
posted @ 2017-01-02 18:06
sigongzi
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Farmer John takes the heritage of his cows very seriously. He is not, however, a truly fine bookkeeper. He keeps his cow genealogies as binary trees a 阅读全文
posted @ 2017-01-02 17:19
sigongzi
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