Problem:
Score : 100 points

Problem Statement

You are given integers A and B, each between 1 and 3 (inclusive).

Determine if there is an integer C between 1 and 3 (inclusive) such that A \times B \times C is an odd number.

Constraints

All values in input are integers.

1 \leq A, B \leq 3

Input

Input is given from Standard Input in the following format:

A B

Output

If there is an integer C between 1 and 3 that satisfies the condition, print Yes; otherwise, print No.

Sample Input 1

3 1

Sample Output 1

Yes

Let C = 3. Then, A \times B \times C = 3 \times 1 \times 3 = 9, which is an odd number.

Sample Input 2

1 2

Sample Output 2

No

Sample Input 3

2 2

Sample Output 3

No

Solution in Scala (2.11.7) (judge verdict: Accepted)

import scala.io.StdIn.readLine

case class Model(a: Int, b: Int) {
  require(1 <= a && a <= 3)
  require(1 <= b && b <= 3)

  private val ab = a * b

  def isExist: Boolean =
    (1 to 3) exists (c => (c * ab) % 2 == 1)
}

object Main extends App {

  val input = readLine.split(" ").map(_.toInt)
  if(Model(input(0), input(1)).isExist)
    println("Yes")
  else
    println("No")

}