#include <bits/stdc++.h>
using namespace std;
#define FOR(i,a,b) for(int i=(a);i<(b);i++)
#define REP(i,n) FOR(i,0,n)
#define ALL(v) (v).begin(),(v).end()
#define fi first
#define se second
template<typename A, typename B> inline bool chmax(A &a, B b) { if (a<b) { a=b; return 1; } return 0; }
template<typename A, typename B> inline bool chmin(A &a, B b) { if (a>b) { a=b; return 1; } return 0; }
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef pair<int, pii> pip;
const ll INF = 1ll<<29;
const ll MOD = 1000000007;
const double EPS  = 1e-10;
const bool debug = 0;
//---------------------------------//

ll mod_pow(ll x, ll n, ll mod) {
	if (n == 0) return 1;
	ll res = mod_pow(x * x % mod, n / 2, mod);
	if (n & 1) res = res * x % mod;
	
	return res;
}

int main() {
	ll n;
	cin >> n;
	
	if (n == 1) {
		cout << 2 << endl;
		return 0;
	}
	
	ll keta = n / 2 - 1;
	ll ans = 4;
	
	if (keta > 0) {
		ans = ans * mod_pow(5, keta, MOD) % MOD;
	}
	
	
	if (n & 1) ans = ans * 3 % MOD;
	cout << ans << endl;
	return 0;
}