object Main extends App {
  val sc = new java.util.Scanner(System.in)
  val a, b = sc.nextInt()
  val result = if (a <= 0 && 0 <= b) {
    "Zero"
  } else if (0 < a || (b - a + 1) % 2 == 0) {
    "Positive"
  } else {
    "Negative"
  }
  println(result)
}
