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 (Python):
n = int(input())
if n == 1:
    print('Hello World')
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
def run():
	N = int(input())

	if N == 1:
		print('Hello World')

	else:
		print(int(input()) + int(input()))

if __name__ == '__main__':
	run()

Solution (Python):

N = int(input())
if N == 1:
    print('Hello World')
    exit()
elif N == 2:
    A = int(input())
    B = int(input())
    print(A + B)
    exit()

Solution (Python):
n = int(input())

if n == 1:
    print('Hello World')
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
if input() == '1':
    print('Hello World')
else:
    print(int(input()) + int(input()))

Solution (Python):
N = int(raw_input())

if N == 1:
    print "Hello World"
else:
    A = int(raw_input())
    B = int(raw_input())
    print A+B

Solution (Python):
n=int(input())
if n==1:
  print("Hello World")
else:
  a=int(input())
  b=int(input())
  print(a+b)

Solution (Python):



n = int(input())


if n == 1:
    print("Hello World")
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
N=int(raw_input())

if N == 1:
    print 'Hello World'
else:
    A=int(raw_input())
    B=int(raw_input())
    print A + B

Solution (Python):


n = int(input())


if n == 1:
    print("Hello World")

elif n == 2:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
n = int(input())
if n == 1:
    print("Hello World")
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
N= int(input())
if N==1:
    print("Hello World")
else:
    A= int(input())
    B= int(input())
    print(A+B)

Solution (Python):
n = input().strip()

if int(n) == 1:
    print("Hello World")
else:
    a = input().strip()
    b = input().strip()
    print(int(a) + int(b))

Solution (Python):
from sys import stdin

def main():
    N = int(input())
    if N < 2:
        print('Hello World')
    else:
        A = int(input())
        B = int(input())
        print(A + B)

input = lambda: stdin.readline()
main()

Solution (Python):
n = int(input())

if n != 1:
    a = int(input())
    b= int(input())
    print(a+b)
else:
    print("Hello World")

Solution (Python):
N = int(input())

if N == 1:
    print('Hello World')
else:
    A = int(input())
    B = int(input())
    print(A + B)

Solution (Python):
N = int(input())
if N == 1:
    print("Hello World")
else:
    A = int(input())
    B = int(input())
    print(A+B)

Solution (Python):


age = int(input())

if age == 1:
    print("Hello World")
elif age == 2:
    a = int(input())
    b = int(input())
    print(a + b)

Solution (Python):
def answer(in0):
    N = in0

    if N == '1':
        return 'Hello World'
    elif N == '2':
        A = int(input())
        B = int(input())
        return A + B


print(answer(input()))

Solution (Python):
s1 = int(input())

if s1 == 1:
    print("Hello World")
    exit()

a = int(input())
b = int(input())

print(a + b)

Solution (Python):
n = int(input())

if n == 1:
    print("Hello World")
    exit(0)

l = list(map(int, [input() for _ in range(2)]))

print(sum(l))

Solution (Python):
n = int(input())
if n == 1:
    print("Hello World")
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
n = int(input())

if n == 1 :
    print("Hello World")

elif n == 2 :
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):

def main():
    n = int(input())
    if n == 1:
        print("Hello World")
        exit()

    a = int(input())
    b = int(input())
    print(a+b)


if __name__ == "__main__":
        main()

Solution (Python):
t = int(input())

if t==1:
    print("Hello World")
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
n = int(input())
if n == 1:
    print('Hello World')
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
N = int(input())
if N ==1:
    print("Hello World")
else:
    print(int(input())+int(input()))

Solution (Python):
n= int(input())
if n==1:
    print('Hello World')
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
n = int(input())
if n == 1:
  print("Hello World")
  exit
if n == 2:
  a = int(input())
  b = int(input())
  print(a+b)

Solution (Python):



def main():
    if input() == 1:
        print("Hello World")
    else:
        A = input()
        B = input()
        print(A + B)


if __name__ == "__main__":
    main()

Solution (Python):
n=int(input())
if n==2:
    a=int(input())
    b=int(input())
if n==1:
    print("Hello World")
else:
    print(b+a)

Solution (Python):
N = int(input())
if N==1: print("Hello World")
    
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
if input() == '1':
    print('Hello World')
    exit()
print(int(input())+int(input()))

Solution (Python):
N = int(input())
if N == 1:
  print('Hello World')
else:
  A = int(input())
  B = int(input())
  print(A+B)

Solution (Python):

n = int(input())
if n == 1:
    print('Hello World')
else:
    a = int(input())
    b = int(input())
    print(a + b)

Solution (Python):
n = int(input())
if n == 1:
    print('Hello World')
elif n == 2:
    a = int(input())
    b = int(input())
    print(a+b)
else:
    pass

Solution (Python):
n=int(input())
if n==1:
  print("Hello World")
else:
  t=[int(input()) for i in range(2)] 
  print(t[0]+t[1])

Solution (Python):
N = int(input())
if N == 1:
  print("Hello World")
else:
  A = int(input())
  B = int(input())
  print(A+B)

Solution (Python):
n=int(input())

if n==1:
  print("Hello World")
else:
  a=int(input())
  b=int(input())
  print(a+b)

Solution (Python):

N = int(input())
if N == 1:
    print("Hello World")
elif N == 2:
    A = int(input())
    B = int(input())
    print(A+B)

Solution (Python):
N = int(input())
if N == 1:
    print("Hello World")
else:
    A = int(input())
    B = int(input())
    print(A + B)

Solution (Python):
n = int(input())
if n == 1:
  print('Hello World')
else:
  a = int(input())
  b = int(input())
  print(a+b)

Solution (Python):
i=input()
if i=="2":
  n=int(input())
  m=int(input())
  print(n+m)
else:
  print("Hello World")

Solution (Python):
h = int(input())
if h == 1:
    ans = 'Hello World'
else:
    A = int(input())
    B = int(input())
    ans = A + B

print(ans)

Solution (Python):
N = int(input())

if N == 1:
  print('Hello World')
else:
  a = int(input())
  b = int(input())
  print(a+b)

Solution (Python):
n=int(input())
if n==1:
    print('Hello World')
elif n==2:
    a=int(input())
    b=int(input())
    print(a+b)

Solution (Python):
n = int(input())

if   n == 1:
    print('Hello World')
elif n == 2:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
n = int(input())

if n == 1:
    print("Hello World")

if n == 2:
    a = int(input())
    b = int(input())
    ans = a + b
    print(ans)

Solution (Python):
N = int(input())

if N == 2:
    A = int(input())
    B = int(input())

if N == 1:
    print('Hello World')
else:
    print(A+B)

Solution (Python):
N = int(input())
if (N == 1):
  print('Hello World')
else:
  A = int(input())
  B = int(input())
  print(A+B)

Solution (Python):
N = int(input())

if N==1:
    print('Hello World')
elif N==2:
    A = int(input())
    B = int(input())
    print(A+B)

Solution (Python):
n = int(raw_input())
if n == 1:
    print('Hello World')
elif n == 2:
    a = int(raw_input())
    b = int(raw_input())
    print(a+b)

Solution (Python):
n = int(input())

if n == 1:
    print('Hello World')
else:
    a = int(input())
    b = int(input())
    print(a + b)

Solution (Python):
n=int(input())
if n==1:
    print('Hello World')
else:
    a=int(input())
    b=int(input())
    print(a+b)

Solution (Python):
n = int(input())

if n == 1:
    print('Hello World')
elif n == 2:
    a = int(input())
    b = int(input())
    print(a + b)

Solution (Python):

N = int(input())
print("Hello World" if N==1 else int(input())+int(input()))

Solution (Python):
N = input()

if N == '1':
    print('Hello World')
elif N =='2':
    A =int(input())
    B =int(input())
    print(A+B)

Solution (Python):


def main():
    n = int(input())
    if n == 1:
        print('Hello World')
    else:
        print(int(input()) + int(input()))


if __name__ == '__main__':
    main()

Solution (Python):
N=int(input())
if N==1:
	print("Hello World")
elif N==2:
	A=int(input())
	B=int(input())
	print(A+B)

Solution (Python):
N = int(input())
if N == 1 :
  print("Hello World")
else:
  A = int(input())
  B = int(input())
  print( A + B )

Solution (Python):
n=int(input())


if n == 1:
    print("Hello World")
elif n == 2:
    ab=[input() for i in range(n)]
    print(int(ab[0])+int(ab[1]))

Solution (Python):
N = int(input())
if N == 1:
    print("Hello World")
else:
    print(int(input())+int(input()))

Solution (Python):

n = input()

if n=="1":
    print("Hello World")
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
N=int(input())
if N == 1:
    print("Hello World")
else:
    A=int(input())
    B=int(input())
    print(A+B)

Solution (Python):
n1=int(input())
if n1==1:
	print("Hello World")
else:
	n2=int(input())
	n3=int(input())
	print(n2+n3)

Solution (Python):
import numpy as np,math,itertools
n=int(input())
if n==1:print("Hello World")
else:
    a=int(input())
    b=int(input())
    print(a+b)

Solution (Python):
N = int(input())
if N == 1:
  print('Hello World')
else:
  A = int(input())
  B = int(input())
  print(A + B)

Solution (Python):
n = int(input())

if(n == 1): print("Hello World")
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
N = int(input())

if N == 1:
    print('Hello World')
elif N == 2:
    A = int(input())
    B = int(input())
    print(A + B)

Solution (Python):
n = int(input())
if n == 1:
    print('Hello World')
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
n=int(input())
if n==1:
    print("Hello World")
else:
    a=int(input())
    b=int(input())
    print(a+b)

Solution (Python):
n = int(input())
if n == 1:
    print('Hello World')
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):

def main():
    N = int(input())
    if N == 1:
        print('Hello World')
        return
    A = int(input())
    B = int(input())
    print(A + B)

if __name__ == '__main__':
    main()

Solution (Python):

from sys import stdin

a = int(stdin.readline().rstrip())

if a == 1:
    print("Hello World")
else:
    b = int(stdin.readline().rstrip())
    c = int(stdin.readline().rstrip())
    print(b + c)

Solution (Python):
N = int(input())


if N == 1:
    print("Hello World")
else:
    A = int(input())
    B = int(input())
    print(A+B)

Solution (Python):
import sys
n = int(input())
if n == 1:
    print("Hello World")
    sys.exit()
else:
    A = int(input())
    B = int(input())
    print(A+B)

Solution (Python):
N = int(input())
if N == 1:
    print("Hello World")
else:
    A = int(input())
    B = int(input())
    print(A+B)

Solution (Python):
n=int(input())
if n==1:
  print('Hello World')
else:
  A=int(input())
  B=int(input())
  print(A+B)

Solution (Python):
n = int(input())

if n == 1:
	print('Hello World')
else:
	A = int(input())
	B = int(input())
	print(A + B)

Solution (Python):
def main():
    N = int(input())

    if N == 1:
        print("Hello World")
    else:
        A = int(input())
        B = int(input())

        print(A+B)


if __name__ == '__main__':
    main()

Solution (Python):
N = int(raw_input())

if N == 1:
    print 'Hello World'
else:
    A = int(raw_input())
    B = int(raw_input())
    print str(A+B)

Solution (Python):
N=int(input())
if N==1:
    print('Hello World')
if N==2:
    A=int(input())
    B=int(input())
    print(A+B)

Solution (Python):
N = int(input())
if N == 1:
    print ("Hello World")
else:
    A = int(input())
    B = int(input())
    print (A + B)

Solution (Python):
a = int(input())

if a == 1:
    print('Hello World')
    exit()
else:
    A = int(input())
    B = int(input())
    print(A+B)

Solution (Python):
a = int(input())

if a == 1:
    print("Hello World")
else:
    b = int(input())
    c = int(input())
    print(b+c)

Solution (Python):
N = int(input())

if N == 1:
    print('Hello World')
else:
    A = int(input())
    B = int(input())
    print(A+B)

Solution (Python):

N = int(input())

if N == 1:
	print('Hello World')
else:
	A = int(input())
	B = int(input())
	print(A+B)

Solution (Python):
N=int(input())
if N == 1:
    print("Hello World")
else:
    A=int(input())
    B=int(input())
    print(A + B)

Solution (Python):
n = int(input())

if n == 1:
    print('Hello World')
else:
    a = int(input())
    b = int(input())
    print(a + b)

Solution (Python):
N = int(input())

if N==1:
    print("Hello World")
    exit()

A = int(input())
B = int(input())

print(A+B)

Solution (Python):
N = int(input())

if N == 1:
    print("Hello World")
else:
    A = int(input())
    B = int(input())
    print(A+B)

Solution (Python):


def main():
    N = input()

    if N == "1":
        print("Hello World")
        exit()
    else:
        print(int(input()) + int(input()))

if __name__ == '__main__':
    main()

Solution (Python):
N = int(input())

if N == 1:
    print('Hello World')
else:
    A = int(input())
    B = int(input())
    print(A+B)

Solution (Python):
if input()=="1":
    print("Hello World")
else:
    print(int(input())+int(input()))

Solution (Python):
n = int(input())
if n == 1:
    print('Hello World')
else:
    a = int(input())
    b = int(input())
    print(a + b)

Solution (Python):
n = int(input())
if n == 1:
    print('Hello World')
else:
    a = int(input())
    b = int(input())
    print(a + b)

Solution (Python):
if input() == "1":
  print("Hello World")
else:
  a = int(input())
  b = int(input())
  print(a+b)

Solution (Python):
N=int(input())
if N==1:
    print("Hello World")
else:
    A=int(input())
    B=int(input())
    print(A+B)

Solution (Python):
from sys import stdin

N = int(stdin.readline().rstrip())
if N == 1:
    print('Hello World')
else:
    A = int(stdin.readline().rstrip())
    B = int(stdin.readline().rstrip())
    print(A + B)

Solution (Python):
n = int(input())
if n == 1:
    print('Hello World')
else:
    a = int(input())
    b = int(input())
    print(a + b)

Solution (Python):
n = int(input())
if n == 1:
  print('Hello World')
  exit()
else:
  a = int(input())
  b = int(input())
  print(a+b)

Solution (Python):
N = int(input())
if N == 1:
  print("Hello World")
else:
  A = int(input())
  B = int(input())
  print(A+B)

Solution (Python):
n = int(input())
if n==2:
  a = int(input())
  b = int(input())
  print(a+b)
else:
  print('Hello World')

Solution (Python):
N = int(input())

if N == 1:
    print("Hello World")
else:
    A = int(input())
    B = int(input())
    print(A + B)

Solution (Python):
N = input()

if N=="1": print("Hello World")
else:
	A = int(input())
	B = int(input())
	print(A+B)

Solution (Python):
N = int(input())

if N == 1:
  print("Hello World")
else:
  print(int(input()) + int(input()))

Solution (Python):
n = int(input())

if n == 1:
    print('Hello World')
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
n = int(input())

if n == 1:
	print("Hello World")
else:
	a = int(input())
	b = int(input())
	print(a+b)

Solution (Python):
import math
from functools import reduce
import collections
import itertools
a = list(map(int,input().split()))
n = a[0]
if n == 1:
    print("Hello World")
if(n == 2):
    aa = int(input())
    ab = int(input())
    print(aa+ab)

Solution (Python):
if __name__ == '__main__':
    n = int(input())
    if n == 1:
        print('Hello World')
    elif n == 2:
        A = int(input())
        B = int(input())
        print(A+B)

Solution (Python):
if input() == "1":
    print("Hello World")
else:
    print(int(input())+int(input()))

Solution (Python):
n = int(input())
if n == 1:
    print("Hello World")
else:
    a = int(input())
    b = int(input())
    print(a + b)

Solution (Python):
N = int(input())
if N == 1:
    print('Hello World')
else:
    print(int(input()) + int(input()))

Solution (Python):
n = int(input())
if n == 1:
    print('Hello World')
else:
    a = int(input())
    b = int(input())
    print(a + b)

Solution (Python):
n=int(input())
if n==1:print('Hello World')
else:
  print(int(input())+int(input()))

Solution (Python):
n=int(input())
if n == 1:
    print('Hello World')
if n == 2:
    print(int(input()) + int(input()))

Solution (Python):
N = int(input())
if N == 1:
    print("Hello World")
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
N = int(input())
if N == 1:
    print("Hello World")
elif N == 2:
    A = int(input())
    B = int(input())
    print(A+B)

Solution (Python):


if __name__ == '__main__':

    s = input()

    if s == '1':
        print("Hello World")
    else:
        A = int(input())
        B = int(input())

        print(A+B)

Solution (Python):
N = input()

if N == 1:
	print 'Hello World'
elif N == 2:
	A = input()
	B = input()
	print A + B

Solution (Python):
N=int(input())

if N==1: print("Hello World")
else:
    a=int(input())
    b=int(input())
    print(a+b)

Solution (Python):

def inpl(): return map(int, input().split())
N = int(input())
if N == 1:
    print("Hello World")
else:
    print(int(input()) + int(input()))

Solution (Python):
y = int(input())

if y == 1:
    print("Hello World")
else:
    a = int(input())
    b = int(input())
    print(a + b)

Solution (Python):
num = int(input())
if num == 1:
    print("Hello World")
elif num == 2:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
n=int(input())
if n==1:
    print("Hello World")
    exit()

a=int(input())
b=int(input())
print(a+b)

Solution (Python):
n = int(input())

if n == 1:
    print("Hello World")
else:
    a = int(input())
    b = int(input())
    print(a + b)

Solution (Python):
N=int(input())
if N==1:
    print("Hello World")
if N==2:
    A=int(input())
    B=int(input())
    print(A+B)

Solution (Python):
N=int(input())
if N==1:
    print("Hello World")
else:
    a=int(input())
    b=int(input())
    print(a+b)

Solution (Python):
n = int(input())

if n == 1:
  print('Hello World')
elif n == 2:
  a = int(input())
  b = int(input())
  print(a+b)

Solution (Python):
N = int(input())

if N == 1:
    print("Hello World")
if N == 2:
    A = int(input())
    B = int(input())
    print(A+B)

Solution (Python):
old = int(input())

if old == 1:
    print("Hello World")
else:
    a = int(input())
    b = int(input())
    print(a + b)

Solution (Python):
n = int(input())
if n == 1:
    print("Hello World")
else:
    A  = int(input())
    B = int(input())
    
    print(A+B)

Solution (Python):
N = int(input())
if N == 1:
    print("Hello World")
else:
    A = int(input())
    B = int(input())
    print(A+B)

Solution (Python):
N = int(input())
if N != 1 :
    A = int(input())
    B = int(input())
    print(A+B)
else :
    print("Hello World")

Solution (Python):
N = int(input())
if N == 1:
    print("Hello World")
else:
    A = int(input())
    B = int(input())
    print(A+B)

Solution (Python):
N = int(input())
if N == 1:
    print('Hello World')
    exit()
A = int(input())
B = int(input())

print(A+B)

Solution (Python):
n=int(input())

if n==1:
    print("Hello World")
elif n==2:
    a=int(input())
    b=int(input())
    print(a+b)

Solution (Python):
n = int(input())
if n == 1:
    print('Hello World')
elif n == 2:
    a = int(input())
    b = int(input())
    print(a + b)

Solution (Python):
N = int(input())

if N == 1:
    print("Hello World")
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
if input()=="1":
    print("Hello World")
else:
    print(int(input())+int(input()))

Solution (Python):
n = int(input())
if n == 1:
    print('Hello World')
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
n = int(input())
if n == 1:
    print("Hello World")
else:
    A = int(input())
    B = int(input())
    print(A+B)

Solution (Python):
n = int(input())
if n==1:
    print("Hello World")
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
N = int(input())
if N == 1:
    print('Hello World')
else:
    A = int(input())
    B = int(input())

    print(A + B)

Solution (Python):
a = int(input())

if a==1:
    print("Hello World")
else:
    A = int(input())
    B = int(input())
    print(A + B)

Solution (Python):
N=input()
if N=='1':
  print('Hello World')
else:
  A=int(input())
  B=int(input())
  print(A+B)

Solution (Python):
n = int(input())

if n ==1:
    print('Hello World')
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
N = int(input())

if N == 1:
    print('Hello World')
elif N == 2:
    A = int(input())
    B = int(input())
    print(A + B)

Solution (Python):
n = int(input())
if n == 1:
    print("Hello World")
elif n == 2:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):



    
def main(a,b):
    if 0 == a * b % 2:
        print('No')
    else:
        print('Yes')
    
    
if __name__ == '__main__':
    try:
        n  = int(input().strip())
        if 1 == n:
            print('Hello World')
        elif 2 == n:
            a = int(input().strip())
            b = int(input().strip())
            print(a + b)
    except EOFError:
        pass

Solution (Python):
N = int(input())

if N == 1:
    print("Hello World")
else:
    A = int(input())
    B = int(input())
    print(A+B)

Solution (Python):
import sys
import math
import collections
import itertools
import array
import inspect


sys.setrecursionlimit(1000000)



def chkprint(*args):
    names = {
        id(v): k
        for k, v in inspect.currentframe().f_back.f_locals.items()
    }
    print(', '.join(
        names.get(id(arg), '???') + ' = ' + repr(arg) for arg in args))



def to_bin(x):
    return bin(x)[2:]


def li_input():
    return [int(_) for _ in input().split()]


def gcd(n, m):
    if n % m == 0:
        return m
    else:
        return gcd(m, n % m)


def gcd_list(L):
    v = L[0]

    for i in range(1, len(L)):
        v = gcd(v, L[i])

    return v


def lcm(n, m):
    return (n * m) // gcd(n, m)


def lcm_list(L):
    v = L[0]

    for i in range(1, len(L)):
        v = lcm(v, L[i])

    return v



def wfs_d(D, N, K):
    """
    D: 隣接行列(距離付き)
    N: ノード数
    K: 始点ノード
    """

    dfk = [-1] * (N + 1)
    dfk[K] = 0

    cps = [(K, 0)]
    r = [False] * (N + 1)
    r[K] = True
    while len(cps) != 0:
        n_cps = []
        for cp, cd in cps:
            for i, dfcp in enumerate(D[cp]):
                if dfcp != -1 and not r[i]:
                    dfk[i] = cd + dfcp
                    n_cps.append((i, cd + dfcp))
                    r[i] = True

        cps = n_cps[:]

    return dfk



def dfs_d(v, pre, dist):
    """
    v:  現在のノード
    pre: １つ前のノード
    dist: 現在の距離

    以下は別途用意する
    D: 隣接リスト(行列ではない)
    D_dfs_d: dfs_d関数で用いる，始点ノードから見た距離リスト
    """

    global D
    global D_dfs_d

    D_dfs_d[v] = dist

    for next_v, d in D[v]:
        if next_v != pre:
            dfs_d(next_v, v, dist + d)

    return


def sigma(N):
    ans = 0
    for i in range(1, N + 1):
        ans += i
    return ans


def comb(n, r):
    if n - r < r: r = n - r
    if r == 0: return 1
    if r == 1: return n

    numerator = [n - r + k + 1 for k in range(r)]
    denominator = [k + 1 for k in range(r)]

    for p in range(2, r + 1):
        pivot = denominator[p - 1]
        if pivot > 1:
            offset = (n - r) % p
            for k in range(p - 1, r, p):
                numerator[k - offset] /= pivot
                denominator[k] /= pivot

    result = 1
    for k in range(r):
        if numerator[k] > 1:
            result *= int(numerator[k])

    return result

def bisearch(L, target):
    low = 0
    high = len(L) - 1
    
    while low <= high:
        mid = (low + high) // 2
        guess = L[mid]
        if guess == target:
            return True
        elif guess < target:
            low = mid + 1
        elif guess > target:
            high = mid - 1
    if guess != target:
        return False



dp = None


def main():
    N = int(input())

    if N == 1:
        print("Hello World")
    else:
        A = int(input())
        B = int(input())
        print(A + B)


main()

Solution (Python):
N=int(input())
if(N == 1):
    print("Hello World")
    exit()
else:
    a = int(input())
    b = int(input())
    print(a + b)
    exit()

Solution (Python):
N = int(input())

if N == 1:
    print('Hello World')
else:
    A = int(input())
    B = int(input())
    print(A+B)

Solution (Python):
n = int(input())
print('Hello World' if n == 1 else int(input()) + int(input()))

Solution (Python):
N = int(input())

if N == 1:
    print('Hello World')
    exit()

A = int(input())
B = int(input())
print(A + B)
exit()

Solution (Python):
n = int(raw_input())
if n == 1:
    print "Hello World"
else:
    print int(raw_input()) + int(raw_input())

Solution (Python):
n = int(input())

if n == 1:
    print('Hello World')
    exit()

a = int(input())
b = int(input())

print(a + b)

Solution (Python):
N = int(input())
if N == 1:
    print('Hello World')
else :
    B = int(input())
    C = int(input())
    print(B + C)

Solution (Python):
n = int(input())

if n == 1:
    print('Hello World')
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
N = int( input())
if N == 1:
    print('Hello World')
else:
    A = int(input())
    B = int(input())
    print(A+B)

Solution (Python):
N = int(input())

if N == 1:
    print('Hello World')
else:
    A = int(input())
    B = int(input())
    print(A+B)

Solution (Python):
n = input()
if n == 1: print "Hello World"
else:
  a = input()
  b = input()
  print a + b

Solution (Python):
import sys
input = sys.stdin.readline

N = int(input())
if N == 1:
	print("Hello World")
	exit()
else:
	a = int(input())
	b = int(input())
	print(a+b)
	exit()

Solution (Python):
N=int(input().strip())
if N==1:
    print("Hello World")
else:
    print(int(input().strip())+int(input().strip()))

Solution (Python):
N = int(input())
if N == 1:
	print("Hello World")
else:
	A = int(input())
	B = int(input())
	print(A + B)

Solution (Python):


INF = float('inf')


def inpl(): return list(map(int, input().split()))


N = int(input())
if N == 2:
    A = int(input())
    B = int(input())
    print(A + B)
else:
    print('Hello World')

Solution (Python):
N = int(input())
if N == 1:
    print('Hello World')
else:
    a = int(input())
    b =  int(input())
    print(a+b)

Solution (Python):
n=int(input())
if n==1:
    print('Hello World')
else:
    n=int(input())
    m=int(input())
    print(m+n)

Solution (Python):
N = int(input())

if N == 1:
    print('Hello World')
else:
    A = int(input())
    B = int(input())
    print(A + B)

Solution (Python):
x = int(input())
if x == 1:
    print("Hello World")
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
N = int(input())

if N == 1:
    print("Hello World")
else:
    A = int(input())
    B = int(input())

    print(A + B)

Solution (Python):



n=int(input())



if n==1:
    print("Hello World")
else:
    a=int(input())
    b=int(input())
    print(a+b)

Solution (Python):
N = int(input())
if N == 1:
    print("Hello World")
else:
    A = int(input())
    B = int(input())
    print(A+B)

Solution (Python):
def main():
    buf = input()
    N = int(buf)
    if N == 1:
        print("Hello World")
    else:
        buf = input()
        A = int(buf)
        buf = input()
        B = int(buf)
        print(A+B)


if __name__ == '__main__':
    main()

Solution (Python):
n = int(input())
if n == 1:
    print('Hello World')
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
def main():
    n = int(input())
    if n == 1:
        print('Hello World')
    else:
        a = int(input())
        b = int(input())
        print(a + b)


if __name__ == '__main__':
    main()

Solution (Python):
ai = lambda: list(map(int,input().split()))
ai_ = lambda: [int(x)-1 for x in input().split()]

n = int(input())
if n == 1:
    print('Hello World')
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
N = int(input())
if N == 1:
    print ("Hello World")
else:
    A = int(input())
    B = int(input())
    print (A + B)

Solution (Python):
N = int(input())
if N == 1:
    print("Hello World")
else:
    A = int(input())
    B = int(input())
    print(A + B)

Solution (Python):
N=int(input())
if N == 1:
    print ('Hello World')
else:
    A =int(input())
    B =int(input())
    print(A+B)

Solution (Python):
str = input()

if str == "1":
    print("Hello World")
elif str == "2":
    print(int(input()) + int(input()))

Solution (Python):
n = int(input())
if n == 1:
    print("Hello World")
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
n = int(input())
if n == 1:
    print("Hello World")
else:
    a = int(input())
    b = int(input())
    print(a + b)

Solution (Python):
import sys

stdin = sys.stdin

ni = lambda: int(ns())
na = lambda: list(map(int, stdin.readline().split()))
ns = lambda: stdin.readline()

i = ni()
if i == 1:
    print("Hello World")
else:
    a = ni()
    b = ni()
    print(a+b)

Solution (Python):
N = int(input())
if N == 1:
    print("Hello World")
else:
    A = int(input())
    B = int(input())
    print(A+B)

Solution (Python):
n = int(input())
if n == 1:
    print("Hello World")
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
N = int(input())
if N == 1:
    print("Hello World")
else:
    A = int(input())
    B = int(input())
    print(A + B)

Solution (Python):
N = int(input())
if N == 1:
    print("Hello World")
else:
    a = int(input())
    b = int(input())
    print(a + b)

Solution (Python):
a = int(input())
if a == 1:
    print('Hello World')
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
n = int(input())

if n == 1:
    print('Hello World')
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):


def main():
    n = int(input())
    if n == 1:
        print('Hello World')
    elif n == 2:
        a = int(input())
        b = int(input())
        print(a + b)
    
if __name__ == '__main__':
    main()

Solution (Python):
a = input()
if a == "1":
    print("Hello World")
else:
    print(int(input()) + int(input()))

Solution (Python):
N = int(input())

if N == 1:
    print("Hello World")
else:
    A = int(input())
    B = int(input())
    print(A+B)