#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for (int (i)=(0);(i)<(int)(n);++(i))
using ll = long long;
using P = pair<ll, ll>;
using namespace std;

template<class T> void vin(vector<T>& v, int n) {
    v.resize(n);
    for (int i = 0; i < n; ++i) {
        cin >> v[i];
    }
}

ll mod_pow(ll x, ll n, ll mod=1e9+7)
{
    ll ret = 1;
    while (n > 0)
    {
        if (n&1) ret = ret * x % mod;
        x = x * x % mod;
        n >>= 1;
    }
    return ret % mod;
}

int main()
{
    const ll mod = 1e9 + 7;
    ll n;
    cin >> n;
    ll tmp = mod_pow(10LL, n);
    cout << (tmp + (tmp - 1) / 3LL) % mod << endl;
}