#include <bits/stdc++.h>

#define int long long

using namespace std;

signed main(){
    cin.tie(0);
    ios::sync_with_stdio(0);
    int n;
    cin >> n;
    int mod = 1000000007;

    int sol = 1;

    if(n == 2){
        cout << "1\n";
        return 0;
    }

    for(int i = 0; i < n-2; i++){
        sol = (sol * (2 % mod)) % mod;
    }

    int res;

    if(n % 2 == 0){
        res = ((n/2) * sol) % mod;
    } else {
        
        res = ((n/2) * sol) % mod;
        res = (res + (sol/2)) % mod;
    }

    

    //sol = ((n % mod) * (sol % mod)) % mod;

    cout << res << "\n";
}