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