#include <stdio.h>
#include <stdlib.h>
unsigned long  int n;
int varial(long  int n,long  int k)
{
    unsigned long int i;
    unsigned long int m=1;
    for(i=n;i>(n-k);i--)
    {
        if(i>0)m*=i;
    }
    return(m);
}
int main()
{
    unsigned int m=0;
    unsigned long int i;
    scanf("%lu",&n);
    for(i=2;i<=2*n;i++)

        if(i<=n)
            {
               m=((m+varial(2*n,i))-(varial(n,i)*2))%666013;
            }
        else
            {
              m=(m+varial(2*n,i))%666013;
            }

    printf("%u",m);
    return 0;
}