#include <bits/stdc++.h>

using namespace std;

#define fst(t) std::get<0>(t)
#define snd(t) std::get<1>(t)
#define thd(t) std::get<2>(t)
#define unless(p) if(!(p))
#define until(p) while(!(p))

using ll = long long;
using P = std::tuple<int,int>;

const int dx[8] = {-1, 1, 0, 0, -1, -1, 1, 1}, dy[8] = {0, 0, -1, 1, -1, 1, -1, 1};

const ll MOD = 1e9 + 7;

template <typename T>
T expt(T a, T n, T mod = std::numeric_limits<T>::max()){
    T res = 1;
    while(n){
        if(n & 1){res = res * a % mod;}
        a = a * a % mod;
        n >>= 1;
    }
    return res;
}

int main(){
    std::cin.tie(nullptr);
    std::ios::sync_with_stdio(false);

    ll N;
    std::cin >> N;

    ll res = 0ll;
    if(N == 1){
        res = 2ll;
    }else{
        ll side = N / 2, center = N % 2;
        res = 4ll * expt<ll>(5ll, side - 1, MOD) % MOD;
        if(center){res = res * 3ll % MOD;}
    }

    std::cout << res << std::endl;
}