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):
a = 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)  
exit()

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

Solution (Python):

A = int(input().strip())

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

Solution (Python):
input_num = input()

if input_num == '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):
year = int(input())
if year is 1:
    print("Hello World")
elif year is 2:
    A = int(input())
    B = int(input())
    print(A + B)

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

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

Solution (Python):

first = input()
if int(first) == 1:
    print('Hello World')
elif int(first) == 2:
    number_one = input()
    number_two = input()
    number = int(number_one) + int(number_two)
    print(str(number))

Solution (Python):

N = input()
N = int(N)   
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")
elif a==2:
    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):


N = input()
if N == '1':
    print('Hello World')
elif N == '2':
    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):
p = int(input())
if p == 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):
x=input()
if x==2:
    a=input()
    b=input()
    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=input()
if N=="1":
    print("Hello World")
elif N=="2":
    A=int(input())
    B=int(input())
    print(A+B)

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

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

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')
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:
    print(int(input())+int(input()))

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

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

Solution (Python):
import sys

a=[]
for line in sys.stdin:
    a.append(int(line))

if len(a) == 1:
    print("Hello World")
else:
    print(a[1]+a[2])

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

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


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

elif n == 2:

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

     c = a + b
     print(c)

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

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

if(i==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")
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):
pattern = int(input())

if pattern == 1:
    print("Hello World")
elif pattern == 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())
try:
    A = int(input())
    B = int(input())
except:
    ''

if N == 1:
    print('Hello World')
elif N == 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)
else:
  pass

Solution (Python):
age = int(input())
if age == 1:
    print('Hello World')
else:
    print(sum(list(int(input()) for i in range(2))))

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

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):
a=int(input())
if a==1:
    print("Hello World")
else:
    a1=int(input())
    b1=int(input())
    print(a1+b1)

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 = 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):
age = input()
if age == '1':
	print("Hello World")
elif age == '2':
	a = input()
	b = input()
	print(int(a) + int(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):
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):
from sys import stdin 
n = int(stdin.readline())
if n==1:
 print 'Hello World'
else:
 a = int(stdin.readline()); b = int(stdin.readline()); print a+b

Solution (Python):
dat0 = input()
if dat0 == "1":
    print("Hello World")
else:
    dat1 = input()
    dat2 = input()
    ans = int(dat1) + int(dat2)
    print(ans)

Solution (Python):

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

Solution (Python):
N=int(raw_input())
if N==1:
	print("Hello World")
if N==2:
  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):
age = input()

if age == "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):
dat0 = input()
if dat0 == "1":
    print("Hello World")
else:
    dat1 = input()
    dat2 = input()
    ans = int(dat1) + int(dat2)
    print(ans)

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

Solution (Python):
n = int(input())
for i in range(n-1):
    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 = 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):
year = int(input())
if year is 1:
    print('Hello World')
elif year is 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:
    output=str('Hello World')
else:
    A=int(input())
    B=int(input())
    output=A+B
print(output)

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

if age == 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):
import itertools as it
import collections as col
import bisect

import sys
sys.setrecursionlimit(10000)

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

    return A + B
    
    
if __name__ == '__main__':
    print(main())

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')
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):
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())
    C=A+B 
    print(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 == 2:
    a = int(input())
    b = int(input())

if n == 1:
    print("Hello World")
if n == 2:
    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):
s=input()
if s=="1":
  print("Hello World")
else:
  s=int(input())
  s+=int(input())
  print(s)

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(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:
    print(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):

def solve():
    if int(input()) == 1:
        res = "Hello World"
    else:
        res = sum(map(int, (input() for _ in range(2))))
    return str(res)

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

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

Solution (Python):
I = int(input())
if I == 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())
    Ans=A+B
    print(Ans)

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

Solution (Python):


from collections import deque
import itertools as it
import sys
import math

sys.setrecursionlimit(1000000)

INF = 10 ** 18

N = input()

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

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

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

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

Solution (Python):


try:
	age = int(input())
	A = int(input())
	B = int(input())

except:
	pass

if age == 2:
	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")
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 = input()

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

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

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

Solution (Python):



import sys

N = raw_input()
if N == "1":
    print 'Hello World'
    sys.exit()
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(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 == 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, 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")
elif n == 2:
    number = []
    for i in range(2):
        number.append(int(input()))
    print(number[0] + number[1])

Solution (Python):
print('Hello World'if input()==1 else input()+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):
import math, string, fractions, heapq, re, array, bisect, sys, random, time, copy
import itertools as it
import collections as cl
import functools as ft

def LI(): return list(map(int, input().split()))
def LI_(): return list(map(lambda x: int(x) - 1, input().split()))
def LF(): return list(map(float, input().split()))
def LS(): return input().split()
def I(): return int(input())
def F(): return float(input())
def S(): return input()


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

Solution (Python):



if __name__ == "__main__":
    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 == 1:
    print("Hello World")
else:
    s = map(int, [input() for i in range(2)])
    print(sum(s))

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:
    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()  

x = ni()
if x == 1:
    print("Hello World")
else:
    a = ni()
    b = ni()
    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):
from sys import stdin
il = lambda func=int: list(map(func, stdin.readline().rstrip().split()))
ils = lambda n, s="int(input())": [eval(s) for _ in range(n)]

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

Solution (Python):

a = int(raw_input())

if (a == 1):
    print "Hello World"
else:
    b = int(raw_input())
    c = int(raw_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 = input()
if N == '1':
    print('Hello World')
elif N == '2':
    A = int(input())
    B = int(input())
    print(A+B)

Solution (Python):

"""
Created on Sat Oct  6 13:48:26 2018

@author: rgraptin
"""

n = input()

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

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

Solution (Python):
from sys import stdin
def issai():
    print("Hello World")

def nisai():
    a = int(stdin.readline().rstrip())
    b = int(stdin.readline().rstrip())
    print(a+b)

if __name__ == '__main__':
    x = int(stdin.readline().rstrip())
    if x == 1:
        issai()
    elif x == 2:
        nisai()

Solution (Python):


N = int(input())

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

Solution (Python):

"""
Created on Sat Sep 15 21:08:34 2018

@author: ogura
"""

n = int(input())

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

Solution (Python):


N = 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")
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):
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")
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)

else:
    pass

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

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")
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 = str(input())

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

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

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

if age == 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 == 2:
    a = int(input())
    b = int(input())
    print(a + b)
    exit()
print('Hello World')

Solution (Python):
I = int(input())
if I == 1:
    print('Hello World')
else:
    A = []
    for i in range(2):
        A.append(int(input()))
    
    print(A[0]+A[1])

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

if N == 1:
    print("Hello World")
elif 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):
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')
	exit()
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):
import sys

lines = sys.stdin.read().split('\n')
age = int(lines[0])
if age == 1:
    print('Hello World')
elif age == 2:
    if len(lines) < 3:
        raise "age 2 but did not receive A and B"
    A = int(lines[1])
    B = int(lines[2])
    print(A+B)
else:
    raise "received invalid age " + str(age)

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 _ in range(2)]
	print(a + b)

Solution (Python):
import sys
N = int(input())
if N == 1:
    print("Hello World")
    sys.exit()

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

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

Solution (Python):
if int(input()) - 1 :
    print(int(input())+int(input()))
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):
GI = lambda: int(input()); GIS = lambda: map(int, input().split()); LGIS = lambda: list(GIS())

def main():
    A = GI()
    if A == 1:
        print('Hello World')
    else:
        B = GI()
        C = GI()
        print(B+C)

main()

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

ans = 0
for i in range(2):
    ans += int(input())

print(ans)

Solution (Python):
old = int(input())
if old == 1:
    print('Hello World')
elif old == 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):

from collections import defaultdict

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

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

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