#include <iostream> #include <algorithm> using namespace std; int a[10001]; int main() { int n,sumn = 0; cin >> n; for (int i = 1 ; i <= n ; i ++) cin >> a[i]; sort(a + 1,a + n + 1); sumn += a[1] + a[2]; for (int i = 3 ; i <= n ; i ++) sumn = sumn * 2 + a[i]; cout << sumn; }