Problem:
Score : 300 points

Problem Statement

"Pizza At", a fast food chain, offers three kinds of pizza: "A-pizza", "B-pizza" and "AB-pizza". A-pizza and B-pizza are completely different pizzas, and AB-pizza is one half of A-pizza and one half of B-pizza combined together. The prices of one A-pizza, B-pizza and AB-pizza are A yen, B yen and C yen (yen is the currency of Japan), respectively.

Nakahashi needs to prepare X A-pizzas and Y B-pizzas for a party tonight. He can only obtain these pizzas by directly buying A-pizzas and B-pizzas, or buying two AB-pizzas and then rearrange them into one A-pizza and one B-pizza. At least how much money does he need for this? It is fine to have more pizzas than necessary by rearranging pizzas.

Constraints

1 ≤ A, B, C ≤ 5000

1 ≤ X, Y ≤ 10^5

All values in input are integers.

Input

Input is given from Standard Input in the following format:

A B C X Y

Output

Print the minimum amount of money required to prepare X A-pizzas and Y B-pizzas.

Sample Input 1

1500 2000 1600 3 2

Sample Output 1

7900

It is optimal to buy four AB-pizzas and rearrange them into two A-pizzas and two B-pizzas, then buy additional one A-pizza.

Sample Input 2

1500 2000 1900 3 2

Sample Output 2

8500

It is optimal to directly buy three A-pizzas and two B-pizzas.

Sample Input 3

1500 2000 500 90000 100000

Sample Output 3

100000000

It is optimal to buy 200000 AB-pizzas and rearrange them into 100000 A-pizzas and 100000 B-pizzas. We will have 10000 more A-pizzas than necessary, but that is fine.

Solution in Fortran (gfortran v4.8.4) (judge verdict: Accepted)

program main
   implicit none
   integer A, B, C, X, Y, countN
   read(*, *) A, B, C, X, Y
   countN = 0
   if(X == Y) then
       if(A+B > 2 * C) then
	       countN = 2 * X * C
	   else
	       countN = (A + B) * X
	   end if
   else if (X > Y) then
       if(A+B > 2 * C) then
	       countN = 2 * Y * C
	   else
	       countN = (A + B) * Y
	   end if
	   X = X - Y
	   if(A > 2 * C) then
	       countN = countN + 2 * X * C
	   else
	       countN = countN + X * A
	   end if
   else
       if(A+B > 2 * C) then
	       countN = 2 * X * C
	   else
	       countN = (A + B) * X
	   end if
	   Y = Y - X
	   if(B > 2 * C) then
	       countN = countN + 2 * Y * C
	   else
	       countN = countN + Y * B
	   end if
   end if
   write(*, *) countN   
end program main