import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int X =scan.nextInt();
        int Y=scan.nextInt();
        int A =scan.nextInt();
        int B =scan.nextInt();
        int C=scan.nextInt();

        int ans = (int) 1e9;
        for (int i = 0; i < 2 * (X + Y) + 1; i++) {
            int ABpizza = i;
            int Apizza = Math.max(X-i/2,0);
            int Bpizza = Math.max(Y-i/2,0);
                    ans = Math.min(ans, Apizza * A + Bpizza * B + ABpizza * C);
        }
        System.out.println(ans);
    }
}

