Cod sursa(job #638328)
Utilizator | Data | 20 noiembrie 2011 20:16:18 | |
---|---|---|---|
Problema | Dirichlet | Scor | 0 |
Compilator | cpp | Status | done |
Runda | .com 2011 | Marime | 0.35 kb |
#include<cstdio>
using namespace std;
long long n,i,au=1,j;
long long mod=9999991;
int main()
{
freopen("dirichlet.in","r",stdin);
freopen("dirichlet.out","w",stdout);
scanf("%lld",&n);
for(i=1;i<=n-1;i++)
au=(au*3)%mod;
au=(au-1)%mod;
au=(au/2)%mod;
au=(au+1)%mod;
printf("%lld",au);
return 0;
}