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