/* ---------- STL Libraries ---------- */
// IO library
#include <cstdio>
#include <fstream>
#include <iomanip>
#include <ios>
#include <iostream>

// algorithm library
#include <algorithm>
#include <cmath>
#include <numeric>
#include <random>
#include <cstring>

// container library
#include <array>
#include <bitset>
#include <deque>
#include <map>
#include <unordered_map>
#include <queue>
#include <set>
#include <string>
#include <tuple>
#include <vector>
#include <stack>

/* ---------- Namespace ---------- */
using namespace std;

/* ---------- Type ---------- */
using ll = long long;
#define int ll
#define P pair<ll, ll>

/* ---------- Constants  */
const double PI = 3.141592653589793238462643383279;
const ll MOD = 1e9 + 7;
const int INF = 1LL << 55;

/* v-v-v-v-v-v-v-v-v Main Part v-v-v-v-v-v-v-v-v */


int mod_pow(int x, int n, int mod) {
    int ret = 1;
    while (n > 0) {
        if (n & 1) ret = ret * x % mod;
        x = x * x % mod;
        n >>= 1;
    }

    return ret;
}

signed main() {
    int N;
    cin >> N;

    int ret = mod_pow(10, N, MOD);
    ret *= 4;
    ret %= MOD;
    ret -= 1;
    ret = (ret + MOD) % MOD;

    // 3でわる
    ret = mod_pow(3, MOD - 2, MOD);

    cout << ret % MOD << endl;

    return 0;
}