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