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 C# (Mono 4.6.2.0) (judge verdict: Accepted)

using System;
using System.Collections.Generic;
using System.Linq;

namespace AtCoder
{
    class Program
    { 
        static void Main(string[] args)
        {
            //[summary]A - Still TBD
            if (IsHeisei())
            {
                Console.WriteLine("Heisei");
            }
            else
            {
                Console.WriteLine("TBD");
            }
        }

        static bool IsHeisei()
        {
            string s = Console.ReadLine();
            var array = s.Split('/');

            int month = int.Parse(array[1]);
            int day = int.Parse(array[2]);

            if (month > 4)
            {
                return false;
            }
            else if (month == 4)
            {
                if (day == 31)
                {
                    return false;
                }
                else
                {
                    return true;
                }
            }
            else
            {
                return true;
            }
        }
    }
}