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#include <fstream>
#define MOD 9999991
using namespace std;
ifstream f ("dirichlet.in");
ofstream g ("dirichlet.out");
long long n;
long long invers(long long a,long long b)
{
long long p=1;
while(b)
{
if(b&1) p=p*a%MOD;
a=a*a%MOD;
b>>=1;
}
return p%MOD;
}
int main()
{
f>>n;
long long n2=2*n,a=1,b=1;
for(int i=n2;i>n+1;--i) a=a*i%MOD;
for(int i=1;i<=n;++i) b=b*i%MOD;
g<<a*invers(b,MOD-2)%MOD<<'\n';
return 0;
}