刚刚洛谷上又一次7，一次4
by Mosklia @ 2018-06-09 11:32:02
```
#include<cstdio>
using namespace std;
int main(){
long long b, m, p, a;
scanf("%lld %lld %lld", &b, &m, &p);
printf("%lld^%lld mod %lld=", b, m, p);
a = b;
// m--;
while(m>0){
if(m&1) b *= a;
a *= a;
b %= p;
a %= p;
m >>= 1;
}
b %= p;
printf("%lld", b);
return 0;
}
```
by Siyuan @ 2018-06-09 11:47:00
```cpp
#include<iostream>
#include<algorithm>
#include<cmath>
using namespace std;
long long b,p,k,s,t;
int main()
{
cin>>b>>p>>k;
cout<<b<<"^"<<p<<" mod "<<k<<"=";
s=b%k;
t=1;
for (int i=2;i<=p;i++)
{
s=s*b%k;
if (s==b%k) break;
t++;
}
p=p%t;s=1;
if (p==0) p=t;
for (int i=1;i<=p;i++)
s=s*b%k;
cout<<s;
return 0;
}
```
by wangzixiang666 @ 2018-06-09 11:47:08
@[Sparky_14145](/space/show?uid=67387)
帮您改了一下代码，不知道能不能过。
纯手改，没测过样例。。。
by Siyuan @ 2018-06-09 11:47:49
@[siyuan](/space/show?uid=49725) get
by Mosklia @ 2018-06-09 13:25:03
@[siyuan](/space/show?uid=49725) 谢了。。。尴尬
`scanf`格式符写错。。。
by Mosklia @ 2018-06-09 13:26:29
@[Sparky_14145](/space/show?uid=67387) 输入用`%lld`占位符啊……
by wseqwq @ 2018-07-16 11:24:36