Problem Statement

You are given two integers $a$ and $b$ ($a \leq b$). Determine if the product of the integers $a$, $a+1$, $\cdots$, $b$ is positive, negative or zero.

Constraints

• $a$ and $b$ are integers.
• $-10^9 \leq a \leq b \leq 10^9$

Partial Score

• In test cases worth $100$ points, $-10 \leq a \leq b \leq 10$.

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.

1 3

Positive

$1 \times 2 \times 3=6$ is positive.

-3 -1

Negative

$(-3) \times (-2) \times (-1)=-6$ is negative.

-1 1

Zero

$(-1) \times 0 \times 1=0$.