Cod sursa(job #1999102)

Utilizator Mircea_DonciuDonciu Mircea Mircea_Donciu Data 10 iulie 2017 12:21:51
Problema Dirichlet Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.52 kb
#include <fstream>

using namespace std;
long long n,i,p1,p2,t,m,q;
int main()
{
    ifstream f("dirichlet.in");
    ofstream g("dirichlet.out");
    f>>n;
    t=9999991;
    p1=n+1;
    p2=1;
    for(i=1; i<=n; i++)
    {
        p1*=i;
        p2*=(n+i);
        p1%=t;
        p2%=t;
    }
    m=t-2;
    q=p1;
    p1=1;
    while(m)
    {
        if(m%2) p1*=q;
        q*=q;
        m/=2;
        p1%=t;
        q%=t;
    }
    g<<(p1*p2)%t<<'\n';
    f.close(); g.close();
    return 0;
}