#include<iostream>
#include<string>
#include<iomanip>
#include<cmath>
#include<vector>
#include<algorithm>
#include<utility>

using namespace std;

#define int long long
#define endl "\n"

constexpr long long INF = (long long)1e18;
constexpr long long MOD = 1'000'000'007; 

struct fast_io {
	fast_io(){
		std::cin.tie(nullptr);
		std::ios::sync_with_stdio(false);
	};
} fio;

signed main(){
	cout<<fixed<<setprecision(10);
	
	int n;
	int sum = 0;
	vector<int> A, B;
	
	cin>>n;
	
	A.resize(n);
	B.resize(n);
	
	for(int i = 0; i < n; i++){
		cin>>A[i];
	}
	
	for(int i = 0, j = 0;; i++){
		bool flag = false;
		for(int k = 0; k < 1<<i; k++){
			if(j+k >= n) {
				flag = true;
				break;
			}
			B[j+k] = i;
		}
		
		j += 1<<i;
		if(flag) break;
	}
	sort(A.begin(), A.end());
	
	for(int i = 0; i < n; i++){
		sum += A[n-i-1] * B[i];
		// cout<<A[n-i-1] <<" "<<B[i]<<endl;
	}
	
	cout<<sum<<endl;
	
	return 0;
}