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# (Mono 4.6.2.0) (judge verdict: Accepted)

using System;using System.Linq;
class A{
static void Main()
{
long []a=Console.ReadLine().Split().Select(long.Parse).ToArray();
Array.Sort(a);
if(a[0]>0&&a[1]>0){Console.WriteLine("Positive");}
else if(a[0]<=0&&a[1]>=0){Console.WriteLine("Zero");}
else if(a[0]==0||a[1]==0){Console.WriteLine("Zero");}
else if((a[1]-a[0])%2==0){Console.WriteLine("Negative");}
else{Console.WriteLine("Positive");}
}

}