Problem:
Score : 100 points

Problem 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.

Constraints

S is a string that represents a valid date in the year 2019 in the yyyy/mm/dd format.

Input

Input is given from Standard Input in the following format:

S

Output

Print Heisei if the date represented by S is not later than April 30, 2019, and print TBD otherwise.

Sample Input 1

2019/04/30

Sample Output 1

Heisei

Sample Input 2

2019/11/01

Sample Output 2

TBD

Solution in Haskell (GHC 7.10.3) (judge verdict: Accepted)

import Data.List
import Data.List.Split
import Data.Bool

readInt :: String -> Int
readInt = read

main = do
 s <- map readInt.wordsBy(=='/')<$>getLine
 putStrLn $ bool "TBD" "Heisei" $ solve s

solve :: [Int] -> Bool
solve [year,month,day]
 | year > 2019 = False
 | year < 2019 = True
 | month > 4 = False
 | otherwise = True