import scala.io.{StdIn => in}

object Main extends App {
  val Array(a, b) = in.readLine.split(" ").map(_.toInt)

  val ans = (a, b) match {
    case (a, b) if a > 0 && b > 0 => "Positive"
    case (a, b) if a <= 0 && 0 <= b => "Zero"
    case (a, b) if (a.abs - b.abs + 1) % 2 == 0 => "Positive"
    case (a, b) if (a.abs - b.abs + 1) % 2 == 1 => "Negative"
  }

  println(ans)
}