#include <bits/stdc++.h>
using namespace std;
#define rep(i, n) for (int i = 0; i < (int)(n); i++)

int main(void){
    int n;
    cin >> n;
    int a[n];
    rep(i,n) cin >> a[i];
    sort(a,a+n);
    reverse(a,a+n);
    long ans = 0;
    rep(i,n){
        int k = i+1,now=-1;
        while(k>0){
           k /= 2;
           now++;
        }
        ans += a[i]*now;
    }
    cout << ans << endl;
}