#include <bits/stdc++.h>
using namespace std;
int main() {
  int a, b, c, x, y;
  int A, B;
  scanf("%d %d %d %d %d", &a, &b, &c, &x, &y);
  A = a * x + b * y;
  B = min(x, y) * c * 2;
  x -= min(x, y);
  y -= min(x, y);
  if (max(x, y) == x)
    B += x * a;
  else
    B += y * b;
  printf("%d ", A > B ? B : A);
  return 0;
}
