output_description: Print `Heisei` if the date represented by S is not later than April 30, 2019,
  and print `TBD` otherwise.
  
  * * *
input_description: Input is given from Standard Input in the following format:
  
      
      
      S
attempt: s = str(input())
  year = ""
  month = ""
  day = ""
  
  for i in range(4):
      y = s[i]
      year += y
  for i in range(5, 7):
      m = s[i]
      month += m
  for i in range(9, 11):
      d = s[i]
      day += d
  
  year = int(year)
  month = int(month)
  day = int(day)
  
  if year < 2019:
      answer = "Heisei"
  
  elif year == 2019 and month <= 4:
      answer = "Heisei"
  
  else:
      answer = "TBD"
  
  print(answer)
  
problem_description: Statement
  
  You are given a string S as input. This represents a valid date in the year
  2019 in the `yyyy/mm/dd` format. (For example, April 30, 2019 is represented
  as `2019/04/30`.)
  
  Write a program that prints `Heisei` if the date represented by S is not later
  than April 30, 2019, and prints `TBD` otherwise.
samples: [{"input": "2019/04/30", "output": "Heisei\n    \n\n* * *"}, {"input": "2019/11/01", "output": "TBD"}]