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

	if(a > 0 ){
		println("Positive")
	}else if(a==0 || b>0){
		println("Zero")
	}else{

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

	}
	
}