#include <bits/stdc++.h>
using namespace std;
int main() {
  int A, B, C, X, Y;
  cin >> A >> B >> C >> X >> Y;
  if (A + B <= 2 * C) {
    cout << A * X + B * Y << endl;
  } else {
    if (X <= Y)
      cout << 2 * C * X + (Y - X) * B << endl;
    else
      cout << 2 * C * Y + (X - Y) * A << endl;
  }
  return 0;
}
