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

positions = []


n.times do
    x, y, h = gets.split.map(&:to_i)
    positions << [x, y, h]
end

sample = positions[0]

res_x = res_y = res_h = 0

0.upto(100) do |cx|
    valid = true
    0.upto(100) do |cy|
        valid = true

        positions.each do |cpos|
            ch = [0, cpos[2] + (cx - cpos[0]).abs + (cy - cpos[1]).abs].max
            valid = true

            res_x = cx
            res_y = cy
            res_h = ch
            positions.each do |pos|
                if pos[2] != [0, ch - (cx - pos[0]).abs - (cy - pos[1]).abs].max
                    valid = false
                    break
                end
            end
            break if valid
        end

        break if valid
    end
    break if valid
end

puts [res_x, res_y, res_h].join(' ')