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#include <fstream>
#define MOD 9999991
using namespace std;
long long putere (long long x, long long n)
{
long long a;
if(n==0) return 1;
else if(n==1) return x;
a=putere(x,n/2);
if(n%2==0) return (a*a)%MOD;
else return (((x*a)%MOD)*a)%MOD;
}
long long combinari(long long n, long long k)
{
long long r=1, t=1,i;
for(i=2;i<=n;i++)
{
r=(r*i)%MOD;
if(i<=k) t=(t*i)%MOD;
if(i<=n-k) t=(t*i)%MOD;
}
t=(t*(k+1))%MOD;
return (r*putere(t,MOD-2))%MOD;
}
int n;
int main()
{
ifstream fin ("dirichlet.in");
ofstream fout ("dirichlet.out");
fin>>n;
fout<<combinari(2*n,n)%MOD;
return 0;
}