#include <bits/stdc++.h>
using namespace std;
int main() {
  int a, b, c, x, y;
  cin >> a >> b >> c >> x >> y;
  int min = 100000000;
  for (int i = 0; i <= 100000; i++) {
    long long value = 2 * c * i + max(0, x - i) * a + max(0, y - i) * b;
    if (value < min) {
      min = value;
    }
  }
  cout << min << endl;
}
