Problem:
﻿Score: 100 points

Problem Statement

In 2020, AtCoder Inc. with an annual sales of more than one billion yen (the currency of Japan) has started a business in programming education.

One day, there was an exam where a one-year-old child must write a program that prints Hello World, and a two-year-old child must write a program that receives integers A, B and prints A+B.

Takahashi, who is taking this exam, suddenly forgets his age.

He decides to write a program that first receives his age N (1 or 2) as input, then prints Hello World if N=1, and additionally receives integers A, B and prints A+B if N=2.

Write this program for him.

Constraints

N is 1 or 2.

A is an integer between 1 and 9 (inclusive).

B is an integer between 1 and 9 (inclusive).

Input

Input is given from Standard Input in one of the following formats:

1

2
A
B

Output

If N=1, print Hello World; if N=2, print A+B.

Sample Input 1

1

Sample Output 1

Hello World

As N=1, Takahashi is one year old. Thus, we should print Hello World.

Sample Input 2

2
3
5

Sample Output 2

8

As N=2, Takahashi is two years old. Thus, we should print A+B, which is 8 since A=3 and B=5.

Solution in Ruby (2.3.3) (judge verdict: Runtime Error)

n = gets.to_i
t = gets.to_i

i = 1
while i <= n
  cost[i] = gets.to_i
  time[i] = gets.to_i
end

i = 1
while i <= n
  down[i] = cost[i] if time[i] < t
end

if down.size == 0
  print "TLE"
else
  i = 1
  while i <= n
    j = 1
    while j <= n
      if down[i] == cost[j]
        down2[i] == time[j]
      end
    end
  end
  i = 1
  while i <= n
    min = (min > down[i]) down[i] : min
  end
end