#include <iostream>
#include <cstdio>

using namespace std;

typedef long long LL;

const int MOD = 1000000007;

LL n, ans;

int QMI(int a, LL k) {
    int ret = 1 % MOD;
    while (k) {
        if (k & 1) ret = 1LL * ret * a % MOD;
        a = 1LL * a * a % MOD;
        k >>= 1;
    }
    return ret;
}

int main() {
    scanf("%lld", &n);
    ans = n % 2 ? 3LL : 1LL;
    if (n % 2) --n;
    n /= 2;
    if (n > 0) ans = ans * 4 % MOD;
    --n;
    ans = ans * QMI(5, n) % MOD;
    printf("%lld\n", ans);

    return 0;
}