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

int main(){
    constexpr long M = 1000000007;
    auto mp = [&M](long i){
        long ret = 1, p = 10;
        while(i){
            if(i & 1){
                ret *= p;
                ret %= M;
            }
            p *= p;
            p %= M;
            i >>= 1;
        }
        return ret;
    };
    long N;
    cin >> N;
    long t = (4 * mp(N) - 1) % M;
    cout << (t % 3 * M + t) / 3 << endl;
    return 0;
}