#include <fstream>
#include <iostream>
using namespace std;

constexpr int mod = 999017;

void fast_mod(int& x){
	if(x >= mod){
		x -= mod; } }

int fibo(const int n){
	int b = 1;
	for(int i = 0, a = 0, c = 1; i < n; a=b, b=c, c=a+b, fast_mod(c), ++i);
	return b; }

int factorial(const int n){
	long long rez = 1;
	for(long long i = 2; i <= n; rez *= i, rez %= mod, ++i);
	return rez; }

int main(){
	ifstream f("sortari2.in");
	ofstream g("sortari2.out");

	int n;
	f >> n;
	g << ((factorial(n) - fibo(2*n-2) + mod)%mod);

	return 0; }