import java.util.Scanner;
class Main{
   public static void main(String arg[]){
           Scanner scn=new Scanner(System.in);
           int a = scn.nextInt();
           int b = scn.nextInt();
           int ab = scn.nextInt();  
           int aNum = scn.nextInt();
           int bNum = scn.nextInt();
           int aTotal  = aNum*a;
           int bTotal = bNum*b;
           int abUp = 0;
           int abDown = 0;
           if(aNum>bNum){
                abUp = aNum*ab*2;
                abDown = bNum*ab*2+a*(aNum-bNum);
            }else{
                abUp = bNum*ab*2;
                abDown = aNum*ab*2+b*(bNum-aNum);
            }
　          int min = aTotal+bTotal;
            min = Math.min(min,abUp);
            min = Math.min(min,abDown);
            System.out.println(min);
        }
}