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.
The input is given from Standard Input in the following format:
a b
If the product is positive, print Positive
. If it is negative, print Negative
. If it is zero, print Zero
.
1 3
Positive
1×2×3=6 is positive.
-3 -1
Negative
(-3)×(-2)×(-1)=-6 is negative.
-1 1
Zero
(-1)×0×1=0.