zyq_19960204的博客

虽然说是自己的理解，那也是看懂了别人的博客才弄懂的这些东西，其实以前的分组有线段树，这个完全可以代替树状数组（自认为），但是树状数组的这个东西感觉很巧妙，利用lowbit实现了一系列的时间优化，空间优化，下面就弄一下它的代码，原理吗，我感觉自己说不好，但是我会扒图，扒高手的总结经验。转载自http://blog.youkuaiyun.com/z309241990/article/details/96152

DescriptionSuppose that the fourth generation mobile phone base stations in the Tampere area operate as follows. The area is divided into squares. The squares form an S * S matrix with the rows an

DescriptionIn this problem, you have to analyze a particular sorting algorithm. The algorithm processes a sequence of n distinct integers by swapping two adjacent sequence elements until the seque

DescriptionFor the daily milking, Farmer John's N cows (1 ≤ N ≤ 50,000) always line up in the same order. One day Farmer John decides to organize a game of Ultimate Frisbee with some of the cows.