#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;


int main() {
    /* Enter your code here. Read input from STDIN. Print output to STDOUT */   
    long long n,i;
    cin>>n;
    long long a[n];
    for(i=0;i<n;i++)
        cin>>a[i];
    sort(a,a+n);
    long long sum=a[n-1];
   long long k=1;
    for(i=n-2;i>=0;i--)
        {
        k=2*k;
        sum+=k*a[i];
    }
    cout<<sum;
    return 0;
}