状态压缩DP总结【POJ3254】【POJ1185】【POJ3311】【HDU3001】【POJ2288】【ZOJ4257】【POJ2411】【HDU3681】 - 我叫MK - CSDN博客



状态压缩DP总结【POJ3254】【POJ1185】【POJ3311】【HDU3001】【POJ2288】【ZOJ4257】【POJ2411】【HDU3681】 - 我叫MK - CSDN博客

动态规划本来就很抽象,状态的设定和状态的转移都不好把握,而状态压缩的动态规划解决的就是那种状态很多,不容易用一般的方法表示的动态规划问题,这个就更加的难于把握了。难点在于以下几个方面:状态怎么压缩?压缩后怎么表示?怎么转移?是否具有最优子结构?是否满足后效性?涉及到一些位运算的操作,虽然比较抽象,但本质还是动态规划。找准动态规划几个方面的问题,深刻理解动态规划的原理,开动脑筋思考问题。这才是掌握动态规划的关键。

动态规划最关键的要处理的问题就是位运算的操作,容易出错,状态的设计也直接决定了程序的效率,或者代码长短。状态转移方程一定要仔细推敲,不可一带而过,要思考为什么这么做,掌握一个套路,遇见这类问题能快速的识别出问题的本质,找出状态转移方程和DP的边界条件。


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