多项式求逆 模板 https://blog.csdn.net/samjia2000/article/details/72522936

THUPC https://www.zhihu.com/question/277016806
https://loj.ac/problems/search?keyword=THUPC
https://github.com/wangyurzee7/THUPC2018
对拍 https://blog.csdn.net/jinglinxiao/article/details/72955955

长春 http://acm.hdu.edu.cn/showproblem.php?pid=5534

bzoj
**https://blog.csdn.net/alan_cty/article/details/54604613

FFT
https://www.cnblogs.com/Zars19/p/6828563.html
https://www.cnblogs.com/GXZlegend/p/6878678.html
http://www.cnblogs.com/GXZlegend/p/6878453.html
https://acm.ecnu.edu.cn/blog/entry/201/
https://www.cnblogs.com/Pneuis/p/8902246.html