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 C++14 (GCC 5.4.1) (judge verdict: Wrong Answer)

#include<bits/stdc++.h>
using namespace std;
int main()
{
  int a,b;
  cin>>a>>b;
  if(a>0 && b>0)
    cout<<"Positive"<<endl;
  else
    if(a<0 && b<0)
    {
      if(b==a)
        cout<<"Positive"<<endl;
      else
      if(b-a%2==0)
        cout<<"Negative"<<endl;
      else
        cout<<"Positive"<<endl;
    }
  else
    cout<<"Zero"<<endl;
  
  
  return 0;
}