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

int main()
{
    int N;
    cin >> N;
    vector<int> A(N);
    for (int i = 0; i < N; i++)
    {
        cin >> A[i];
    }
    sort(A.rbegin(), A.rend());
    long long ans = 0;
    for (int i = 0; i < N; i++)
    {
        int ni = i + 1;
        int flor = 0;
        while (ni)
        {
            flor++;
            ni /= 2;
        }
        ans += A[i] * (flor - 1);
    }
    cout << ans;
}