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

typedef long long ll;
#define int ll
#define endl '\n'
#define pii pair<int , int>
#define _FastIO ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0)
#define pb push_back
#define pii pair<int , int>
#define F first
#define S second
#define M_PI 3.14159265358979323846
const int mod = 1000000007;
const int MAXX = 1e6 + 5;

int n;

signed main()
{
    _FastIO;
    cin >> n;
    vector<int> a(n);
    for(int i = 0; i < n; i++){
        cin >> a[i];
    }
    sort(a.rbegin() , a.rend());
    int ans = 0;
    for(int i = 0; i < n; i++){
        int k = log2(i + 1);
        ans += (k * a[i]);
    }
    cout << ans << endl;
    return 0;
}