#include <bits/stdc++.h>
using namespace std;

using int64 = long long;
using uint64 = unsigned long long;

const int64 MOD = 1e9 + 7;

int64 powMod(int64 a, int64 n)
{
    int64 res = 1, p = a % MOD;
    while (n > 0)
    {
        if (n & 1)
        {
            (res *= p) %= MOD;
        }
        (p *= p) %= MOD;
        n >>= 1;
    }
    return res;
}

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

    int64 N;
    cin >> N;

    if (N == 1)
    {
        // 0, 1, 8
        cout << 2 << endl;
        return 0;
    }

    int64 ans = 1;
    if (N & 1)
    {
        ans = 3;
        N--;
    }
    // 1, 8, 0, 9, 6
    (ans *= powMod(5, N / 2 - 1)) %= MOD;
    // 1, 8, 9, 6
    (ans *= 4) %= MOD;

    cout << ans << endl;

    return 0;
}