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