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