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 Java (OpenJDK 11.0.6) (judge verdict: Accepted)

import java.util.*;
public class Main
{
    public static void main(String [] args)
    {
        Scanner sc = new Scanner(System.in);
        int a = sc.nextInt(); int b = sc.nextInt();
        if ((a < 0 && b > 0) || a == 0 || b == 0) {
            System.out.println("Zero");
        } else if (a > 0) {
            System.out.println("Positive");
        } else {
            System.out.println( (b - a + 1) % 2 == 0 ? "Positive" : "Negative");
        }
    }


}