import java.util.Scanner

object Main {
  def main(args: Array[String]): Unit = println(solve(new Scanner(System.in)))

  def solve(in: String): String = solve(new Scanner(in))

  def solve(sc: Scanner): String = {
    val A = sc.nextInt
    val B = sc.nextInt

    val result = if ((A * B) % 2 == 0) "No" else "Yes"

    result.toString
  }
}
