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 Java8 (OpenJDK 1.8.0) (judge verdict: Accepted)


import java.util.*;
import java.io.*;
public class Main{
	public static void main(String[] args) throws IOException {
		try(BufferedReader kb= new BufferedReader(new InputStreamReader(System.in))){
			StringTokenizer st = new StringTokenizer(kb.readLine());
			int a = Integer.parseInt(st.nextToken());
			int b = Integer.parseInt(st.nextToken());
			if(a<=0 && b>=0){
				System.out.println("Zero");
			}
			else if (a==b){
				System.out.println("Positive");
			}
			else if(a>0){
				System.out.println("Positive");
			}
			else if(((Math.abs(a)-Math.abs(b))%2)==0){
				System.out.println("Negative");
			}
			else{
				System.out.println("Positive");
			}
			
		}
	}
}