#include <future>
#include <iostream>

using namespace std;
int main()
{
	ios::sync_with_stdio(false);
	cin.tie(0);

	int x;
	cin >> x;

	unsigned long long int res = 1;
	thread t = thread([&res](int x) 
	{
		for (int i = x; i > 0; i--)
		{
			res *= i;
			res %= 1000000007;
		}
	},x/2);
	t.join();


	
	for (int i = x; i > x/2; i--)
	{
		res *= i;
		res %= 1000000007;
	}
	cout << res << "\n";

	return 0;
}