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 (4.10.0) (judge verdict: Accepted)

open Core

type input = {a: int; b: int}

let i = Scanf.scanf "%d %d" (fun a b -> {a; b})

let even = (i.a * i.b) mod 2 = 0

let () = print_endline (if even then "Even" else "Odd")