#include <bits/stdc++.h>
using namespace std;
int main() {
  long int a, b, c, d, x, y, ans;
  cin >> a >> b >> c >> x >> y;
  if (x >= y)
    d = a;
  else
    d = b;
  if ((a + b) / 2 < c)
    ans = a * x + b * y;
  else if (d < c)
    ans = 2 * c * min(x, y) + d * abs(x - y);
  else
    ans = 2 * c * max(x, y);
  cout << ans << endl;
}
