Cod sursa(job #638304)

Utilizator andreea1coolBobu Andreea andreea1cool Data 20 noiembrie 2011 20:08:01
Problema Dirichlet Scor 0
Compilator cpp Status done
Runda .com 2011 Marime 0.35 kb
#include<cstdio>
using namespace std;
int n,i,rez=1,au=1,j;
int mod=9999991;

int main()
{
    freopen("dirichlet.in","r",stdin);
    freopen("dirichlet.out","w",stdout);
    scanf("%d",&n);
    for(i=1;i<=n-1;i++)
        au=(au*3)%mod;
    au=((au-1)%mod-1)/2+1;

    if(n!=1)
        rez=(rez+au)%mod;
    printf("%d",rez);
    return 0;
}