#include <bits/stdc++.h>
using namespace std;
int main() {
  long long i;
  long long counter = 0;
  long long A, B, C, X, Y;
  cin >> A >> B >> C >> X >> Y;
  if (A >= 2 * C && B >= 2 * C) {
    long long i = 2 * C * max(X, Y);
    cout << i << endl;
  } else if (A + B <= 2 * C) {
    i = A * X + B * Y;
    cout << i << endl;
  } else
    while (X > 0 && Y > 0) {
      X = X - 1;
      Y = Y - 1;
      counter = counter + 2;
    }
  if (A <= 2 * C && B <= 2 * C) {
    i = C * counter + X * A + Y * B;
    cout << i << endl;
  } else if (A >= 2 * C && X > 0)
    cout << C * (counter + 2 * X) << endl;
  else if (B >= 2 * C && Y > 0)
    cout << C * (counter + 2 * Y) << endl;
}
