| ||||||||||
| Online Judge | Problem Set | Authors | Online Contests | User | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Web Board Home Page F.A.Qs Statistical Charts | Current Contest Past Contests Scheduled Contests Award Contest | |||||||||
Re:表示有一步好难理解啊In Reply To:表示有一步好难理解啊 Posted by:cigaring at 2010-10-29 21:02:34 > __int64 MLE(__int64 a,__int64 b,__int64 n)
> {
> __int64 x,y,x0;
> __int64 d=Extended_Euclid(a,n,x,y);
> if(b%d)
> return -1;
>
> x0=x*(b/d)%n+n;
> return x0%(n/d);
>
>
> }
>
>
> x0=x*(b/d)%n+n;
> return x0%(n/d);
> 就是这一步,不能严格证明,有点晕
算法导论上有详细证明。。。
Followed by: Post your reply here: |
All Rights Reserved 2003-2013 Ying Fuchen,Xu Pengcheng,Xie Di
Any problem, Please Contact Administrator