#define _USE_MATH_DEFINES
#include <bits/stdc++.h>
using namespace std;
const long long mod = 1e9 + 7;
long long power(long long x, long long y) {
  long long res = 1;
  while (y) {
    if (y & 1) res = res * x % mod;
    x *= x;
    res %= mod;
    x %= mod;
    y >>= 1;
  }
  return res;
}
long long sub(long long x, long long y) {
  long long res = x - y;
  if (x < 0) x += mod;
  return res;
}
long long inverse(long long x) {
  x = (x % mod + mod) % mod;
  long long y = mod, u = 1, v = 0;
  while(y) {
    long long t = x / y;
    x -= t * y; swap(x, y);
    u -= t * v; swap(u, v);
  }
  return (u % mod + mod) % mod;
}

signed main() {
  ios::sync_with_stdio(false); cin.tie(0);
  long long n;
  cin >> n;
  cout << sub(4 * power(10, n) % mod, 1) * inverse(3) % mod << endl;
  return 0;	  
}