#include <bits/stdc++.h>

using namespace std;
typedef long long ll;
int main(){
    int n,i;
    cin >> n;
    vector<int> calories(n);
    for(int calories_i = 0; calories_i < n; calories_i++){
       cin >> calories[calories_i];
    }
    sort(calories.begin(),calories.end());
    ll m=1LL,ans=calories[n-1],j;
    for(i=n-2;i>=0;i--){
        m=m*2LL;
        j=(ll)calories[i];
        ans=ans+(j*m);
    }
    cout<<ans<<endl;
    // your code goes here
    return 0;
}