#include <iostream>
#include <vector>
#include <algorithm>
#include <cmath>
#include <string>

using namespace std;

#define REP(i, n) for (int i = 0; i < (n); ++i)
#define P(x) cout << (x) << "\n"
#define D(x) cerr << (x) << "\n"
#define fcout cout << fixed << setprecision(18)

using i64 = long long int; // 10^18
static const i64 MOD = 1000000007;
i64 modpow(i64 base, i64 power, i64 mod) {
    i64 res = 1;
    if(power==0) res = 1;
    else if(power%2==0)res = ((modpow(base, power/2, mod)%mod)*(modpow(base, power/2, mod)%mod))%mod;
    else if(power%2==1)res = (base*modpow(base, power/2, mod))%mod;
    return res;
}
i64 moddiv(i64 a, i64 b, i64 mod) {
    i64 s = mod,t = b,u=1,v=0;
    while(s) {
        i64 e = t/s;
        swap(t-=e*s, s);
        swap(u-=e*v, v);
    }
    if(u<0)u+=mod;
    return a*u % mod;
}
i64 moden(i64 x)
{
    return moddiv(4 * pow(10, x) - 1, 3, MOD);
}
int main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);
    i64 n;cin>>n;
    P(moden(n));
    return 0;
}