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