#include <bits/stdc++.h>
using namespace std;
int main() {
  int A, B, C, X, Y;
  cin >> A >> B >> C >> X >> Y;
  int ret = 5000 * 100000;
  for (int i = 0; i <= 1000000; i++) {
    ret = min(ret, C * 2 * i + A * (max(X - i, 0)) + B * (max(0, Y - i)));
  }
  cout << ret << endl;
}
