a, b, c, x, y = map(int, input().split(' '))

min_price = 100000 * 3 * 5000
for pizza_c in range(max(x, y) * 2 + 1):
        pizza_a = max(x - int(pizza_c / 2), 0)
        pizza_b = max(y - int(pizza_c / 2), 0)
        min_price = min(pizza_a * a + pizza_b * b + pizza_c * c, min_price)
print(min_price)