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 Julia (0.5.0) (judge verdict: Accepted)

if isfile("mystdin.txt");mystdin=open("mystdin.txt","r");redirect_stdin(mystdin);end
pI(x)=parse(BigInt,x)
pM(x::Array{SubString{String},1})=map(pI,x)
function main()
  a,b=pM(split(readline()))
  if (a>0) != (b>0) || a==0 || b==0
    println("Zero")
  elseif a<0 && abs(a-b)%2==0
    println("Negative")
  else
    println("Positive")
  end
end
main()
if isdefined(Base, :mystdin);close(mystdin);end