github:
git.oschina.net/hocriser/templates (gitee.com/hocriser/templates)
斜率优化
https://www.cnblogs.com/ka200812/archive/2012/08/03/2621345.html
中国剩余定理+扩展定理+Lucas+扩展Lucas定理
http://blog.csdn.net/clove_unique/article/details/54571216
后缀自动机
http://blog.csdn.net/doyouseeman/article/details/52245413
FFT（衡水学长博客）
http://www.cnblogs.com/rvalue/p/7351400.html
