object Main {
  def judge(ret: Boolean, ok: String, ng: String): Unit = if (ret) println(ok) else println(ng)

  def main(args: Array[String]): Unit = {
    val sc = new java.util.Scanner(System.in)
    val a, b = sc.nextInt

    val ret = if (a % 2 == 1 && b % 2 == 1) true else false

    judge(ret, "Odd", "Even")
  }
}
