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==2:
    a=int(input())
    b=int(input())
    print(a+b)
else:
    print('Hello World')

Solution (Python):
N = int(input())
ans = 0
if N == 1:
    print('Hello World')
elif N == 2:
    A,B = [input() for i in range(2)]
    ans += int(A[0])
    ans += int(B[0])
    print(ans)

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

if n==1:
    print("Hello World")
else:
    a, b = [int(input()) for i in range(2)]
    print(a + b)

Solution (Python):


N = int(input().split()[0])

if N == 1:
    ans = "Hello World"
else:
    A = int(input().split()[0])
    B = int(input().split()[0])
    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')
else:
    a=int(input())
    b=int(input())
    print(a+b)

Solution (Python):
N = int(input())
if N == 1:
    print('Hello World')
else:
    int_list = [int(input()) for i in range(2)]
    print(sum(int_list))

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, B = [int(input()) for i in range(2)]
	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):
age = int(input())
if age == 1:
	print('Hello World')
else:
	A = int(input())
	B = int(input())
	print(A+B)

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

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(str(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 == 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:
  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, b = [int(input()) for _ in range(2)]
    print(a+b)

Solution (Python):
if int(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):
import sys


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

isTest=False

def pa(v):
	if isTest:
		print(v)

if __name__ == "__main__":
	if sys.platform =='ios':
		sys.stdin=open('inputFile.txt')
		isTest=True
	else:
		pass
		
			
	ret = main()
	if ret is not None:
		print(ret)

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()) for _ in range(2)]
    print(sum(a))

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

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

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

Solution (Python):
import os, sys, re, math

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):

inputData = list(map(int, open(0).read().split()))

if inputData[0] == 1:
    print("Hello World")
else:
    print(inputData[1] + inputData[2])

Solution (Python):
import sys, re
from collections import deque, defaultdict, Counter
from math import ceil, sqrt, hypot, factorial, pi, sin, cos, radians
from itertools import permutations, combinations, product
from operator import itemgetter, mul
from copy import deepcopy
from string import ascii_lowercase, ascii_uppercase, digits
from fractions import gcd
from bisect import bisect

def input(): return sys.stdin.readline().strip()
def INT(): return int(input())
def MAP(): return map(int, input().split())
def LIST(): return list(map(int, input().split()))
sys.setrecursionlimit(10 ** 9)
INF = float('inf')
mod = 10 ** 9 + 7

N =  INT()
if N == 1:
	print("Hello World")
else:
	A = INT()
	B = INT()
	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")
elif n == 2:
  a = int(input())
  b = int(input())
  print(a+b)

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

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

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:
    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):
def main():
    N = int(input())
    if(N==1):
        print('Hello World')
    else:
        A = int(input())
        B = int(input())
        print(str(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):
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):
age = int(input())

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

Solution (Python):
N = int(input())
if N == 1:
    print('Hello World')
    exit(0)
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):
print('Hello World' if input()=='1' else 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())
print("Hello World" if n == 1 else int(input())+int(input()))

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

Solution (Python):
def slove():
    import sys
    input = sys.stdin.readline
    n = int(input().rstrip('\n'))
    if n == 1:
        print("Hello World")
    else:
        a = int(input().rstrip('\n'))
        b = int(input().rstrip('\n'))
        print(a + b)


if __name__ == '__main__':
    slove()

Solution (Python):
import sys

input = sys.stdin.readline


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


if __name__ == "__main__":
    main()

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

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')
else:
    a, b = [int(input()) for i in range(2)]
    print(a + b)

Solution (Python):
n = int(input())
if n == 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")
  exit(0)
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")
  quit()
elif n==2:
  a = int(input())
  b = int(input())
  print(a+b)

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

Solution (Python):

N = int(input())
if N == 1:
    print('Hello World')
else:
    a = 0
    for i in range(N):
        b = int(input())
        a += b
    print(a)

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

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

Solution (Python):
if int(input()) == 1:
    print('Hello World')
else:
    print(sum([int(input()) for _ in range(2)]))

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

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

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')
  exit()
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,b=int(input()),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( "Hello World" if n == 1 else 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:
    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 input()=='1':
  print('Hello World')
else:
  print(sum([int(input()) for i in range(2)]))

Solution (Python):
N = int(input())
if N == 1:
    print("Hello World")
else:
    A, B = [int(input()) for _ in range(2)]
    print(A + B)

Solution (Python):
N=int(input())
if N==2:
    A,B=map(int,[input() for i in range(2)])
    print(A+B)
else:
    print('Hello World')

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):
s = int(input())
if s == 2:
    A = int(input())
    B = int(input())
    print(A+B)
else:
    print("Hello World")

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

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

Solution (Python):
import sys

if sys.platform =='ios':
    sys.stdin=open('input_file.txt')
    
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')
elif n ==2:
  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):
print("Hello World" if int(input()) == 1 else sum(int(input()) for _ in range(2)))

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

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==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):
import sys
N = input()
if N=="1":
    print("Hello World")
    sys.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):
print("Hello World" if input()=="1" else 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):
a=int(input())
if a==2:
  b=int(input())
  c=int(input())
  print(b+c)
else:
  print('Hello World')

Solution (Python):

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

Solution (Python):
print("Hello World"if input()=="1"else eval("+int(input())"*2))

Solution (Python):
if input()=="1":
  print("Hello World")
else:
  [a,b]=[int(input()) for _ in range(2)]
  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, *A = map(int, open(0).read().split())
    flg = N == 1
    print("Hello World" if flg else sum(A))


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):
x=int(input())
if x ==1:
    print("Hello World")
else:
    a,b=[int(input()) for i in range(2)]
    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 = int(input())
if n == 1:
    print('Hello World')
else:
    print(int(input()) + int(input()))

Solution (Python):
N = int(input())
ans = 0

if N == 1:
    print("Hello World")
else:
    for _ in range(N):
        ans += int(input())
    print(ans)

Solution (Python):
import sys
sys.setrecursionlimit(1000000000)
ii = lambda: int(input())
mis = lambda: map(int, input().split())
lmis = lambda: list(mis())

def main():
    N = ii()
    if N==1:
        print('Hello World')
    else:
        print(ii()+ii())

main()

Solution (Python):
n = int(input())
print("Hello World" if n == 1 else sum([int(input()) for _ in range(2)]))

Solution (Python):
N = int(input())
if N ==2:
  A = int(input())
  B = int(input())
  print(A+B)
  exit()
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):
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()) for i in range(n)]
  print(a[0] + a[1])

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

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

N = int(input())

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

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

Solution (Python):
import sys
N = int(sys.stdin.readline())

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

if N == 2:
    ans = 0
    for value in sys.stdin.readlines():
        ans += int(value)

    print(ans)

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):
y = int(input())
if y == 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 sum([int(input()) for _ in range(2)]))

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")
if N == "2":
  A = int(input())
  B = int(input())
  r = A+B
  print(r)

Solution (Python):
print('Hello World' if input()=='1' else 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):
if int(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):
N = int(input())
if N == 1:
  print("Hello World")
else:
  print(sum([int(input()) for _ in range(2)]))

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):
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):
n = 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):
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")
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:
  a = int(input())
  b = int(input())
  print(a+b)

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

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")
else:
  print(sum(list([int(input()) for i in range(2)])))

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

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

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

Solution (Python):

X = int(input())
if X == 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')
else:
    for i in range(2):
        a = int(input())
        b = int(input())
        print(a + b)
        break

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

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):

X = int(input())
if X == 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().rstrip()  

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

Solution (Python):
a=[]
if int(input())==1:
	print("Hello World")
else:
	for i in range(2):
		a.append(int(input()))
	print(sum(a))

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

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

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

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

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

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

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

Solution (Python):
n = int(input())
if n == 1:
    print('Hello World')
else:
    a,b  = [int(input()) for _ in range(2)]
    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')
elif n == 2:
    a = int(input())
    b = int(input())
    if 1 <= a <= 9 and 1 <= b <= 9:
        print(a + b)
    else:
        print('hoge!')
else:
    print('hoge!')

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

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

main()

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

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

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=[list(map(int,input().split())) for _ in range(2)]
  print(ab[0][0]+ab[1][0])

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):
v = list(map(int, open(0).read().split()))
if(len(v) == 1):
  print("Hello World")
else:
  print(v[1] + v[2])

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")
    exit()
else:
    a = int(input())
    b = int(input())
    print(a+b)

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

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

if __name__ == '__main__':
    print(main())

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')
elif n == 2:
    a, b = [int(input()) for _ in range(2)]
    print(a+b)