#include <cstdio>
using namespace std;

long long n;

int main() {
    long long i, j;
    freopen("dirichlet.in", "r", stdin);
    freopen("dirichlet.out", "w", stdout);
    scanf("%lld", &n);
    j = 2;
    for(i = 1; i <= n; i++) {
        j *= (2 * n - i);
        j /= i;
        j = j % 9999991;
    }
    j /= n + 1;
    printf("%lld\n", j);
    return 0;
}