https://blog.csdn.net/c6376315qqso/article/details/81130241

 

 

https://blog.csdn.net/Coldfresh/article/details/81122267

https://blog.csdn.net/coldfresh/article/details/74117650

 

 

cf 暴力 https://blog.csdn.net/litmxs/article/details/74182326

 

 

树状数组查询区间内不同数的个数基本操作 http://www.cnblogs.com/chenquanwei/articles/9340577.html

https://blog.csdn.net/thinfatty/article/category/6927499 莫队算法

 

 

拉格朗日插值

http://www.ebola.pro/article/notes/Lagrange

小凯的疑惑 https://www.zhihu.com/question/67960150

 

牛客网直播链接https://www.nowcoder.com/live/167/3/1