#include <bits/stdc++.h>
using namespace std;
int main() {
  long long int a, b, c, x, y, ans = 0;
  cin >> a >> b >> c >> x >> y;
  if (a + b < 2 * c) {
    cout << a * x + b * y << endl;
  } else if (x > y) {
    if (a < 2 * c) {
      cout << a * (x - y) + 2 * c * y << endl;
    } else {
      cout << 2 * c * x << endl;
    }
  } else {
    if (b < 2 * c) {
      cout << b * (y - x) + 2 * c * y << endl;
    } else {
      cout << 2 * c * y << endl;
    }
  }
  return 0;
}
