#include <bits/stdc++.h>
using namespace std;
int main() {
  int a, b, c, x, y, d, ans = 100000000, e;
  cin >> a >> b >> c >> x >> y;
  for (int i = 0; i <= max(x, y); i++) {
    e = c * 2 * i + a * max(0, x - i) + b * max(0, y - i);
    ans = min(ans, e);
  }
}
