#include <stdio.h>
#include <math.h>

int main()
{
	int n;
	scanf("%d", &n); 
	n *= 2;
	int sum = n*n / 2;

	for (int i = 3; i <= n; i++)
	{
		sum += (sum * 2 * (n-i + 1)-sum);
		sum %= 666013;
	}
	printf("%d", sum);
	return 0;
}