#include <bits/stdc++.h>
#define endl '\n'
using namespace std;

typedef long long ll;
const ll mod = 1e9+7;

ll solve(ll n)
{
    ll ans = 1;
    ll base = 2;
    while(n > 0)
    {
        if(n % 2 == 1) ans = (ans * base) % mod;
        base = (base * base) % mod;
        n /= 2;
    }
    return ans;
}

int main()
{
    ios::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);

    ll n;
    cin >> n;
    cout << solve(n - 1) << endl;
    return 0;
}