Problem:
Problem Statement

You are given two integers a and b (a≤b). Determine if the product of the integers a, a+1, …, b is positive, negative or zero.

Constraints

a and b are integers.

-10^9≤a≤b≤10^9

Partial Score

In test cases worth 100 points, -10≤a≤b≤10.

Input

The input is given from Standard Input in the following format:

a b

Output

If the product is positive, print Positive. If it is negative, print Negative. If it is zero, print Zero.

Sample Input 1

1 3

Sample Output 1

Positive

1×2×3=6 is positive.

Sample Input 2

-3 -1

Sample Output 2

Negative

(-3)×(-2)×(-1)=-6 is negative.

Sample Input 3

-1 1

Sample Output 3

Zero

(-1)×0×1=0.

Solution in Java7 (OpenJDK 1.7.0) (judge verdict: Accepted)

/* Filename: AGC002A.java
 * Author: Mushiyo
 */

import java.util.Scanner;

public class Main{

	public static void main(String[] args) {
		Scanner input = new Scanner(System.in);

		while (input.hasNext()) {
			int a = input.nextInt();
			int b = input.nextInt();
			
			if(a > 0){
				System.out.println("Positive");
			} else if (b < 0){
				if((b - a + 1) % 2 == 0){
					System.out.println("Positive");
				} else {
					System.out.println("Negative");
				}
			} else {
				System.out.println("Zero");
			}
		}
	}
}