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

#define fi first
#define se second
#define all(x) x.begin(), x.end()
#define lch (o << 1)
#define rch (o << 1 | 1)

typedef double db;
typedef long long ll;
typedef unsigned int ui;
typedef pair<int, int> pint;
typedef tuple<int, int, int> tint;

const int N = 5e4 + 5;
const int INF = 0x3f3f3f3f;
const ll INF_LL = 0x3f3f3f3f3f3f3f3f;

int a[N];

int main() {
	ios::sync_with_stdio(0);

	int n;
	cin >> n;
	for (int i = 1; i <= n; i++)
		cin >> a[i];
	sort(a + 1, a + n + 1, greater<int>());

	ll ans = 0;
	int bas = 1, p = 0;
	for (int i = 1; i <= n; i++) {
		if (bas * 2 <= i) {
			bas *= 2;
			p++;
		}
		ans += a[i] * p;
	}
	cout << ans << endl;

	return 0;
}