摘要: https://www.lydsy.com/JudgeOnline/problem.php?id=3992 有a*bΞx(mod m),则ord(a)+ord(b)Ξord(x)(mod φ(m)) 对Σxord(si)循环卷积FFT即可 #include<cstdio> #include<algo 阅读全文
posted @ 2018-06-18 16:40 Stump 阅读(182) 评论(0) 推荐(0) 编辑