#include <bits/stdc++.h>
using namespace std;
#define rep(i , a, b) for(int i = a; i < (b) ; ++i)
#define all(x) std::begin(x), std::end(x)
#define sz(x) ((int) x.size())
typedef long long ll;
#define int ll
typedef pair<int,int> pii;

typedef vector<int> vi;

const ll mod = 1e9 +7;

ll modpow(ll b, ll e) {
    ll ans = 1;
    for(;e ; b = b*b%mod,e/=2) {
        if(e & 1) ans = ans * b % mod;
    }
    return ans;
}

signed main() {
    cin.tie(0)->sync_with_stdio(0);
    int k;
    cin >> k;
    cout << (((modpow(2,k-2) * k)/2)%mod) << endl;
    return 0;
}