#include <bits/stdc++.h>
using namespace std;
int main() {
  int price_a, price_b, price_c, x, y;
  cin >> price_a >> price_b >> price_c >> x >> y;
  int price_ab = 2 * price_c;
  int ans = 0;
  int money;
  for (int i = 0; i <= max(x, y); i++) {
    money = price_ab * i + price_a * max(0, x - i) + price_b * max(0, y - i);
    ans = min(ans, money);
  }
  cout << ans << endl;
}
