#include<fstream>
#define MOD 9999991
using namespace std;
ifstream f("dirichlet.in");
ofstream g("dirichlet.out");
int n,i,p;
int lgput(int nr, int exp)
{
    if(exp==0)
        return 1;
    int aux=lgput(nr, exp/2);
    if(exp%2)
        return ((1LL*aux*aux)%MOD*nr)%MOD;
    return (1LL*aux*aux)%MOD;
}
int main()
{
    f>>n;
    p=1;
    for(i=1;i<=n;++i)
    p=(1LL*p*i)%MOD;
    p=lgput(p,MOD-2);
    for(i=n+2;i<=2*n;++i)
    p=(1LL*p*i)%MOD;
    g<<p<<'\n';
    return 0;
}