#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using P = pair<int, int>;
constexpr ll INF = 9e18;
constexpr int inf = 1e9;
const double INFD = 1e100;
const ll mod = 1000000007;
const double PI = 3.1415926535897932384626433832795028841971;
const int dx[4] = {1, 0, -1, 0};
const int dy[4] = {0, 1, 0, -1};
template <class T>
inline bool chmin(T& a, T b) {
  if (a > b) {
    a = b;
    return true;
  }
  return false;
};
template <class T>
inline bool chmax(T& a, T b) {
  if (a < b) {
    a = b;
    return true;
  }
  return false;
};
template <typename T>
inline string toString(const T& a) {
  ostringstream oss;
  oss << a;
  return oss.str();
};
int main() {
  int A, B, C, X, Y;
  cin >> A >> B >> C >> X >> Y;
  int ans = 1e9;
  for (int i = 0; i <= 1000000; i += 2) {
    int sum = i * C;
    sum += max(X - i / 2, 0) * A;
    sum += max(Y - i / 2, 0) * B;
    chmin(ans, sum);
  }
  cout << ans << endl;
  return 0;
}
