#include <algorithm>
#include <cstdio>
#include <iostream>
#include <map>
#include <cmath>
#include <queue>
#include <set>
#include <sstream>
#include <stack>
#include <string>
#include <vector>
#include <stdlib.h>
#include <stdio.h>
#include <bitset>
#include <cstring>
using namespace std;
#define FOR(I,A,B) for(int I = (A); I < (B); ++I)
#define CLR(mat) memset(mat, 0, sizeof(mat))
typedef long long ll;
const int mod = 1e9 + 7;
int main()
{
  int N; cin >> N;
  if(N == 1) {
    cout << 2 << endl;
    return 0;
  }
  ll ans = 0;
  if(N % 2 == 1) ans += 3;
  else ans = 1;
  FOR(i,0,N/2) {
    if(i == N / 2 - 1) ans *= 4;
    else ans *= 5;
    ans %= mod;
  }
  cout << ans << endl;
}