#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using vll = vector<ll>;
#define sz(x) ((ll)(x).size())
const ll MOD = 1e9+7;

int main() {
    ll N;
    cin >> N;
    ll res = N;
    for (ll i = 0; i < N - 3; ++i) {
        res = (res * 2) % MOD;
    }
    cout << res << endl;
}