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 C# (Mono 4.6.2.0) (judge verdict: Wrong Answer)

using System;

namespace atCoder
{
    class Program
    {

        static void Main()
        {
            string[] temp = Console.ReadLine().Split(' ');
            int a = int.Parse(temp[0]);
            int b = int.Parse(temp[1]);
            int c = int.Parse(temp[2]);
            int x = int.Parse(temp[3]);
            int y = int.Parse(temp[4]);
            long result = 0;

            if (c * 2 < a || c * 2 < b)
            {
                while (0 < x || 0 < y)
                {
                    result += c * 2;

                    x--;
                    y--;
                }
            }
            else if (c * 2 < a + b)
            {
                if (x < y)
                {
                    while (0 < x)
                    {
                        result += c * 2;

                        x--;
                        y--;
                    }
                }
                else
                {
                    while (0 < y)
                    {
                        result += c * 2;

                        x--;
                        y--;
                    }
                }
            }

            while (0 < x)
            {
                result += a;

                x--;
            }

            while (0 < y)
            {
                result += b;

                y--;
            }

            Console.WriteLine(result);
        }
    }
}