三篇关于动态规划优化的文章，四边形不等式优化以及一些其他特殊情况下的优化-3 on the dynamic programming to optimize the article, optimization of quadrilateral inequality as well as some other exceptional circumstances, the optimization ... ...

有关2D凸包的算法，1. 排序更简单，只是简单的比较，没有运算. 2. 起始点更好找，就是排序后的第一个点. 3. 可以很好地处理特殊情况(共线).-The 2D convex hull algorithm, 1. Sorting easier, just a simple comparison, there is no operation. 2. To find a better starting point, that is sort of a point after the fir