#include <bits/stdc++.h>
using namespace std;
using ll = long long;

void print_list(vector<ll> a){
	for(auto i:a){
		cout << i << ' ';
	}
	cout << '\n';
}

int m = 1000000007;

int main(){
	int n;
	cin>>n;
	ll x = n;
	for (int i=0;i<n-3;i++){
		x = x * 2 % m;
	}
	cout << x <<'\n';
}