#include<bits/stdc++.h>
#define rep(i,a,b) for(int i=int(a);i<int(b);++i)
using namespace std;
typedef long long ll;
int INF = (1LL << 30) - 1;
int MOD = 1e9+7;
ll powmod(ll x,ll n){
    if(n == 0)return 1;
    ll ans = powmod(x*x%MOD,n/2);
    if(n % 2)ans = ans * x % MOD;
    return ans;
}
ll divmod(ll a,ll b){
    return ((a%MOD) * (powmod(b,MOD-2)%MOD)) % MOD;
}
ll calc(ll n){
    ll num = (4 * powmod(10, n) - 1 + MOD) % MOD;
    num = divmod(num, 3);
    return num;
}
main(){
    ll N;
    cin >> N;
    cout << calc(N) << endl;
    /*
    ll num = 1;
    
    rep(i,0,N){
        printf("%d:%9lld,%9lld\n",i ,num ,calc(i));
        //cout << i << ":" << num << "," << calc(i) << endl;
        num = (num * 10 + 3) % MOD;
    }   
    */
}