#include <bits/stdc++.h> using namespace std; typedef long long LL; int a[10005]; int main() { int n; cin >> n; for (int i = 1; i <= n; i++) cin >> a[i]; sort(a + 1, a + n + 1); LL sum = a[1] + a[2]; for (int i = 3; i <= n; i++) sum = sum * 2 + a[i]; cout << sum << endl; return 0; }