output_description: If the product is positive, print `Positive`. If it is negative, print
  `Negative`. If it is zero, print `Zero`.
  
  * * *
input_description: The input is given from Standard Input in the following format:
  
      
      
      a b
attempt: # For taking integer inputs.
  def inp():
      return(int(input()))
  
  
  # For taking List inputs.
  def inlist():
      return(list(map(int, input().split())))
  
  
  # For taking string inputs. Actually it returns a List of Characters, instead of a string, which is easier to use in Python, because in Python, Strings are Immutable.
  def instr():
      s = input()
      return(list(s[:len(s)]))
  
  
  # For taking space seperated integer variable inputs.
  def invr():
      return(map(int, input().split()))
  
  
  a, b = invr()
  res = "Negative"
  
  
  if a > 0 and b > 0:
      res = "Positive"
  if a < 0 and b < 0:
      temp = abs(abs(a)-abs(b)) + 1
      if temp % 2 == 0:
          res = "positive"
      else:
          res = "Negative"
  if a == b:
      res = "Positive"
  if a <= 0 and b = > 0:
      res = "Zero"
  
  print(res)
  
problem_description: 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.
samples: [{"input": "1 3", "output": "Positive\n    \n\n1\u00d72\u00d73=6 is positive.\n\n* * *"}, {"input": "-3 -1", "output": "Negative\n    \n\n(-3)\u00d7(-2)\u00d7(-1)=-6 is negative.\n\n* * *"}, {"input": "-1 1", "output": "Zero\n    \n\n(-1)\u00d70\u00d71=0."}]