import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;

public class Solution {

    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        int i,j=0,k=0;
        int n = in.nextInt();
        int[] calories = new int[n];
        for(i=0; i < n;i++){
            calories[i] = in.nextInt();
        }
        Arrays.sort(calories);
        for(i=n;i>0;i--){
            sum=sum+(int)Math.pow(2,j)*i;
            j=j+1;
            
        }
        System.out.println(sum);
        
        // your code goes here
    }
}