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