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

int mod = 1e9+7;

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

    vector<ll> val(N+1,0);
    val[0] = 1;
    for(int i=1; i<=N; i++){
        val[0] = (val[0]*10)%mod;
    }
    val[1] = 3;
    for(int i=2; i<=N; i++){
        val[i] = (val[i-1]*10)%mod;
    }

    ll ans = 0;
    for(int i=0; i<=N; i++){
        ans += val[i];
        ans = ans%mod;
    }
    cout << ans << endl;
}