#include <bits/stdc++.h>

using namespace std;

int main(){
    int n;
    cin >> n;
    vector<int> calories(n);
    for(int calories_i = 0; calories_i < n; calories_i++){
       cin >> calories[calories_i];
    }
    // your code goes here
    int c=0,i,a=0;
    sort(calories.begin(),calories.end());
    for(i=n;i>0;i--)
        {
        c=c+(i*pow(2,a));
        a++;
    }
    cout<<c;
    return 0;
}