HeHe（积性函数）
题目链接
https://cn.vjudge.net/contest/307680#problem/A
In the equation X^2≡X(mod N) where x∈[0,N-1], we define He[N] as the number of solutions.
And furthermore, define HeHe[N]=He[1]*……*He[N]
Now here ...
原创
2019-06-25 15:34:02 ·
630 阅读 ·
0 评论
关注
分享
扫一扫