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A simple math on modular calculations.Code below can be simplified of course. 阅读全文
posted @ 2016-07-24 07:56
Tonix
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摘要：
Another interesting DP. Lesson learnt: how you define state is crucial.. 1. if DP[i] is defined as, longest wiggle(up\down) subseq AT number i, you wi 阅读全文
posted @ 2016-07-24 07:31
Tonix
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