#include <bits/stdc++.h>

using namespace std;

int main(){
    long long n;
    cin >> n;
    long long arr[n], i, val = 0, c = 0;
    
    for(i = 0; i < n; ++i){
       cin >> arr[i];
    }
    
    sort(arr, arr + n, greater<int>());
    
    for(i = 0; i < n; ++i){  
       val = val + ( c + (arr[i] * pow(2, i)));
        //cout << val << endl;
        //c = arr[i];
    }  
    
    cout << val << endl;

    return 0;
}