#line 1 "main.cpp"
#include <iostream>
#include <algorithm>
#include <vector>

using namespace std;

void solve() {
    int n;
    cin >> n;

    vector<int> xs(n);
    for (auto& x : xs) cin >> x;
    sort(xs.rbegin(), xs.rend());

    int ans = 0, k = -1;
    for (int i = 0; i < n; ++i) {
        if (__builtin_popcount(i + 1) == 1) ++k;
        ans += xs[i] * k;
    }

    cout << ans << "\n";
}

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

    solve();

    return 0;
}