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 Go (1.6) (judge verdict: Wrong Answer)

package main

import (
	"bufio"
	"fmt"
	"os"
	"strconv"
	"strings"
	"time"
)

func main() {
	nextReader = NewScanner()
	line := nextString()

	input, _ := time.Parse("2006/01/02", line[0])
	heisei := time.Date(2019, 4, 30, 0, 0, 0, 0, time.UTC)

	if heisei.Sub(input) > 0 {
		fmt.Println("TBS")
	} else {
		fmt.Println("heisei")
	}
}

// ------ Mathライブラリ ---------------------------------//
func max(a ...int) int {
	r := a[0]
	for i := 0; i < len(a); i++ {
		if r < a[i] {
			r = a[i]
		}
	}
	return r
}

func maxIdx(a ...int) int {
	r := a[0]
	index := 0
	for i := 0; i < len(a); i++ {
		if r < a[i] {
			r = a[i]
			index = i
		}
	}
	return index
}

func min(a ...int) int {
	r := a[0]
	for i := 0; i < len(a); i++ {
		if r > a[i] {
			r = a[i]
		}
	}
	return r
}

func minIdx(a ...int) int {
	r := a[0]
	index := 0
	for i := 0; i < len(a); i++ {
		if r > a[i] {
			r = a[i]
			index = i
		}
	}
	return index
}

func sum(a []int) (r int) {
	for i := range a {
		r += a[i]
	}
	return r
}

func abs(a int) int {
	if a < 0 {
		return -a
	}
	return a
}

// ------ Mathライブラリ ---------------------------------//

// ----- 標準入力用の関数 ----------------------------------//
var nextReader func() []string

func NewScanner() func() []string {
	r := bufio.NewScanner(os.Stdin)
	r.Buffer(make([]byte, 1024), int(1e+11))
	return func() []string {
		r.Scan()
		return strings.Fields(r.Text())
	}
}

func nextString() []string {
	return nextReader()
}

func nextInt() []int {
	var intArray []int
	strArray := nextReader()
	for _, v := range strArray {
		i, _ := strconv.Atoi(v)
		intArray = append(intArray, i)
	}
	return intArray
}

func nextFloat64() []float64 {
	var floatArray []float64
	strArray := nextReader()
	for _, v := range strArray {
		f, _ := strconv.ParseFloat(v, 64)
		floatArray = append(floatArray, f)
	}
	return floatArray
}

// ------ 標準入力用の関数 ---------------------------------//

// ------ あまり使わない -----------------------------------//
func nextInt64() []int64 {
	var int64Array []int64
	strArray := nextReader()
	for _, v := range strArray {
		i, _ := strconv.ParseInt(v, 10, 64)
		int64Array = append(int64Array, i)
	}
	return int64Array
}

// ------ あまり使わない -----------------------------------//