#include<cstdint>
#include<iostream>
using u64 = std::uint_fast64_t;

static constexpr u64 MOD = 1000000007;

u64 scan() {
	u64 a;
	std::cin >> a;
	return a;
}

int main() {

	const u64 k = scan();

	if (k % 2 == 1) {
		std::cout << 0 << std::endl;
		return 0;
	}

	const u64 h = k / 2;

	u64 ans = 1, div = 1;

	for (u64 i = k;i != h;--i) {
		ans = (ans*i) % MOD;
	}
	for (u64 i = h;i != 0;--i) {
		div = (div*i) % MOD;
	}

	u64 exp = MOD - 2;
	while (exp) {
		if (exp % 2) {
			ans = (ans*div) % MOD;
		}
		div = (div*div) % MOD;
		exp /= 2;
	}

	std::cout << ans << std::endl;

	return 0;
}