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