func main()
	var n: int :: cui@inputInt()
	var a: []int :: #[n]int
	for i(0, n - 1)
		do a[i] :: cui@inputInt()
	end for
	do a.sort()
	do a.reverse()
	
	var f: int :: 0
	var max: int :: 0
	var ans: int :: 0
	for i(0, n - 1)
		do ans :+ a[i] * f
		if(i = max)
			do f :+ 1
			do max :+ 2 ^ f
		end if
	end for
	do cui@print("\{ans}\n")
end func