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 PyPy3 (2.4.0) (judge verdict: Time Limit Exceeded)

a, b = [int(i) for i in input().split()]
if 0 <= a and 0 >= b:
    print('Zero')
    exit()
if a > 0:
    print('Positive')
    exit()
c = b
while a != b:
    c *= a
    a += 1
print('Positive' if c > 0 else 'Zero' if c == 0 else 'Negative')