object Main extends App {

  import scala.io.StdIn.readLine
  val Array(a, b) = readLine().trim.split(" ").map(_.toInt)
  if (0 < a) {
    println("Positive")
  } else if (0 == a) {
    println("Zero")
  } else if (0 <= b) {
    println("Zero")
  } else {
    if ((b - a) % 2 == 0) {
      println("Negative")
    } else {
      println("Positive")
    }
  }

}
