object Main extends App {
	val Array(a, b) = scala.io.StdIn.readLine.split(" ").map(_.toLong)

	if(a > 0L ){
		println("Positive")
	}else if(a=<0L && b>=0L){
		println("Zero")
	}else{

		if(b-a+1L % 2L == 0L){
			println("Positive")
		}else{
			println("Negative")
		}
	}
	
}
