#ifdef _MSC_VER
#  define _CRT_SECURE_NO_WARNINGS
#  define _USE_MATH_DEFINES
#  include <intrin.h>
#  define __builtin_popcount __popcnt
#endif

#include <bits/stdc++.h>
using namespace std;
using i32 = int; using i64 = long long int; using f64 = double;
using u32 = unsigned int; using u64 = unsigned long long int; using str = string;
template <typename T> using vec = vector<T>; void in() { }
template <typename T, typename...TS> void in(T &&x, TS &&...xs) { cin >> x; in(move(xs)...); }
template <typename T> void out(T &&x) { cout << x << "\n"; }
template <typename T, typename...TS> void out(T &&x, TS &&...xs) { cout << x << " "; out(move(xs)...); }
#define indef(t, ...) t __VA_ARGS__; in(__VA_ARGS__)
#define get(t) []{ t x; cin >> x; return x; }()
#define times(n, i) for (i32 i = 0; i < (n); ++i)
#define range(a, b, i) for (i32 i = (a); i < (b); ++i)
#define upto(a, b, i) for (i32 i = (a); i <= (b); ++i)
#define downto(a, b, i) for (i32 i = (a); i >= (b); --i)
#define all(xs) (xs).begin(), (xs).end()
#define sortall(xs) sort(all(xs))
#define reverseall(xs) reverse(all(xs))
#define even(x) ((abs(x) & 1) == 0)
#define odd(x) ((abs(x) & 1) == 1)
#define bit(x, i) (((x) >> i) & 1)
#define append emplace_back
#define bisect_left lower_bound
#define bisect_right upper_bound
#define bound(a, x, b) (a <= x && x <= b)
const i64 MOD = 1000000007ll;
const f64 EPS = 1e-10;

template <typename T> T prevpow(T a, T x) {
    if (a <= 1 || x < 1) throw domain_error(NULL);
    T n = floor(log(double(x)) / log(double(a)));
    T p = pow(a, n + 1);
    return p <= x ? p : pow(a, n);
}

template <typename T> tuple<T, T, T> gcdext(T a, T b) {
    T s0 = 1, s1 = 0;
    T t0 = 0, t1 = 1;
    T q = 1;
    while (b != 0) {
        q = a / b;
        swap(a, b); b = b % a;
        swap(s0, s1); s1 = s1 - q*s0;
        swap(t0, t1); t1 = t1 - q*t0;
    }
    return a < 0 ? make_tuple(-a, -s0, -t0) : make_tuple(a, s0, t0);
}

template <typename T> T invmod(T n, T m) {
    auto gxy = gcdext(n, m);
    T g, x, y; tie(g, x, y) = gxy;
    if (g != 1 || m == 0) throw domain_error(NULL);
    return (x+m)%m;
}

template <typename T> T powmod(T x, T p, T m) {
    if (p < 0) return powmod(invmod(x, m), -p, m);
    if (p == 0) return 1 % m;
    if (m == 1 || m == -1) return 0;
    T b = x % m;
    T t = prevpow(T(2), p);
    T r = 1;
    while (true) {
        if (p >= t) {
            r = (r*b) % m;
            p -= t;
        }
        t >>= 1;
        if (t <= 0) break;
        r = (r*r) % m;
    }
    return r;
}

i64 dp[50001];

i64 solve() {
    indef(i64, n);
    if (n == 1) {
        return 2;
    }
    i64 t = powmod(5ll, n/2-1, MOD);
    t = (t * 4) % MOD;
    if (odd(n)) {
        t = (t * 3) % MOD;
    }
    return t;
}

i32 main()
{
    ios::sync_with_stdio(false);

#ifdef _MSC_VER
    /**
    ifstream fin("input.txt"); cin.rdbuf(fin.rdbuf()); assert(fin);
    ofstream fout("output.txt"); cout.rdbuf(fout.rdbuf()); assert(fout);
    /**/
#endif

    //cout << fixed << setprecision(9);
    out(solve());

#ifdef _MSC_VER
    /**/
    /**/
#endif
    return 0;
}