校赛准备
http://www.cnblogs.com/baocong/p/6753362.html
http://www.cnblogs.com/ECJTUACM-873284962/p/6606163.html
http://blog.csdn.net/just_sort/article/details/72208259
http://www.voidcn.com/article/p-ukqugiuz-bbb.html
https://zhuanlan.zhihu.com/p/27223282
http://www.voidcn.com/article/p-xxbcvxat-cp.html
http://www.cnblogs.com/BlackStorm/p/5380872.html
省赛准备
KD坑:http://qiancl.is-programmer.com/posts/196300.html
冷门坑:https://blog.csdn.net/skywalkert/article/details/52463289
线段树新坑:http://www.vyess.top/archives/301
网络流增强坑:https://blog.csdn.net/jasonvictoryan/article/details/48324407
可持久化trie坑:http://www.cnblogs.com/joyouth/p/5572495.html
欧拉降幂校赛坑
约瑟夫结论坑:https://blog.csdn.net/qq_37632935/article/details/79773753
666背包:https://blog.csdn.net/qq_39670434/article/details/79477392