#include <iostream>
using namespace std;

template<typename T>
T power(T a, T b, T mod) {
	if (b == 0) return 1;
	T res = power(a, b / 2, mod);
	if (b % 2) res = res * res % mod * a % mod;
	else res = res * res % mod;
	return res;
}

int main() {
	long N, mod = 1000000007;
	cin >> N;
	if (N == 1) cout << 2;
	else if (N % 2) cout << 12 * power(5l, N / 2 - 1, mod) % mod;
	else cout << 4 * power(5l, N / 2 - 1, mod) % mod;
}