Problem:
Score : 100 points

Problem Statement

AtCoDeer the deer found two positive integers, a and b.
Determine whether the product of a and b is even or odd.

Constraints

1 ≤ a,b ≤ 10000

a and b are integers.

Input

Input is given from Standard Input in the following format:

a b

Output

If the product is odd, print Odd; if it is even, print Even.

Sample Input 1

3 4

Sample Output 1

Even

As 3 × 4 = 12 is even, print Even.

Sample Input 2

1 21

Sample Output 2

Odd

As 1 × 21 = 21 is odd, print Odd.

Solution in OCaml (4.02.3) (judge verdict: Accepted)

let (a, b) = Scanf.scanf "%d %d" @@ fun a b -> (a, b)

let solve = function
  | (a, b) when (a * b) mod 2 = 0 -> "Even"
  | _ -> "Odd"

let () =
  (a, b)
    |> solve
    |> Printf.printf "%s\n"