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.