#54. NOIP2009PJ-25
NOIP2009PJ-25
- (阅读程序写结果)
#include <iostream>
using namespace std;
const int c=2009;
int main()
{
int n,p,s,i,j,t;
cin >> n >> p;
s=0;t=1;
for(i=1;i<=n;i++)
{
t=t*p%c;
for(j=1;j<=i;j++)
s=(s+t)%c;
}
cout << s << endl;
return 0;
}
输入:11 2
输出:{{ input(1) }}