#include <iostream>
#include <fstream>
#include <cstdio>
#include <cmath>
#include <vector>
#include <cstring>
#include <string>
#include <set>
#include <map>
#include <stack>
#include <queue>
#include <algorithm>
using namespace std;

#define REP(i,n) for(int i=0; i<n; ++i)
#define FOR(i,a,b) for(int i=a; i<=b; ++i)
#define FORR(i,a,b) for (int i=a; i>=b; --i)
#define ALL(c) (c).begin(), (c).end()

typedef long long ll;
typedef vector<int> VI;
typedef vector<ll> VL;
typedef vector<VI> VVI;
typedef vector<VL> VVL;
typedef pair<int,int> P;
typedef pair<ll,ll> PL;

const ll mod = 1e9+7;

ll powll(ll x, ll y){
    ll res = 1LL;
    while(y){
        if (y & 1LL)
            res *= x;
        res %= mod;
        x = (x*x) % mod;
        y >>= 1LL;
    }
    return res;
}

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