# ZeroJudge - d309: Put a banana in your ear!
### 題目連結：https://zerojudge.tw/ShowProblem?problemid=d309
###### tags: `ZeroJudge` `數學`

#include <iostream>
using namespace std;
#define MOD 1000000007

int powersOf2[32] = { 1, 2 };

void Initialize() {
	for (int i = 2; i < 32; ++i)
		powersOf2[i] = ((long long)powersOf2[i - 1] * powersOf2[i - 1]) % MOD;
}

int FastPower(int power) {
	if (power < 0)
		return 0;
	int answer = 1, index = 1;
	while (power) {
		if (power & 1)
			answer = ((long long)answer * powersOf2[index]) % MOD;
		power >>= 1; ++index;
	}
	return answer;
}

int main() {
	cin.sync_with_stdio(false); cin.tie(nullptr);
	Initialize();
	int people;
	while (cin >> people)
		cout << (((long long)people * (people - 1)) % MOD * FastPower(people - 2)) % MOD << '\n';
}