#include <iostream>
#include <bits/stdc++.h>

using namespace std;
typedef long long int ll;

ll power(ll x, ll y, ll p) {
    ll res = 1;
    x = x % p;
    if (x == 0) return 0;
    while (y > 0){
        if(y & 1) res = (res * x) % p;
        y = y >> 1;
        x = (x * x) % p;
    }
    return res;
}

ll prime = 1000000007;


int main() {
    ll n;
    cin >> n;

    cout << ((n * power(2, n - 2, prime)) % prime * power(2, prime - 2, prime)) % prime << endl;

    return 0;
}