a, b, c, x, y = map(int, input().split())
ab = min(x, y)//2 * 2
ans1 = ab*2*c + max(0, x-ab)*a + max(0, y-ab)*b

ans2 = x*a + y*b

ab = max(x, y)//2 * 2
ans3 = ab*2*c + max(0, x-ab)*a + max(0, y-ab)*b
print(min(ans1, ans2, ans3))
