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

Solution (Python):
def solve(string):
    flag, *ab = map(int, string.split())
    return str(sum(ab)) if flag - 1 else "Hello World"


if __name__ == '__main__':
    flag = int(input())
    if flag - 1:
        flag = "{}\n".format(flag) + "\n".join([input(), input()])
    print(solve(str(flag)))

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:
    p=[int(input()) for i in range(n)]
    print(sum(p))

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

Solution (Python):
from sys import stdin

n = int(stdin.readline().rstrip())
if n == 1:
  print("Hello World")
else:
  print(sum([int(stdin.readline().rstrip()) for _ in range(n)]))

Solution (Python):
n = int(input())
if n==1:
    print('Hello World')
elif n==2:
    a = [int(input()) for i in range(2)]
    print(sum(a))

Solution (Python):
input()
try:print(int(input())+int(input()))
except: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):
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)
else:
    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")
if n==2:
	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):
N=int(input())

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

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

Solution (Python):
if input()==1:
  print "Hello World"
else:
  print input()+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
import sys
import heapq
from operator import itemgetter
import itertools
input = sys.stdin.readline











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

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 exit

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())
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')
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):
num = int(input())
if num == 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')
    
if age == 2:
    s = [int(input()) for i in range(2)]
    print(int(s[0] + s[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):
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(input())

if N == 1:
    print('Hello World')
if N == 2:
    A, B = map(int, stdin.read().split())
    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')
elif N == 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, 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=input()
if n=='1':
    print('Hello World')
else: 
    print(sum([int(input()) for i in range(2)]))

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

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


main()

Solution (Python):
def main() -> None:
    n = int(input())
    if n == 1:
        print("Hello World")
    elif n == 2:
        print("%s" % (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):
n=int(input())
if n==1:
    print("Hello World")
elif n==2:
    a=int(input())
    b=int(input())
    print(a+b)

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

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

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

Solution (Python):
import sys
 
def main():
  input = sys.stdin.readline
  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:
  p = int(input())
  q = int(input())
  print(p + q)

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

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

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):
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")
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):
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:
    sum=0
    i=0
    while i < 2:
        sum+= int( raw_input() )
        i+=1
    print sum

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,b=map(int, [input() for i 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):
print('Hello World') if input()=='1' 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')
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):
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(sum(list(map(int,[input() for i 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")
elif N ==2:
    A,B =[int(input())for _ in range(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):
X = int(input())

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

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

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

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')
if 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):
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 = [input() for i in range(N)]
    print(int(a[0]) + int(a[1]))

Solution (Python):
""" AtCoder """

import sys
input = sys.stdin.readline

N = int(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:
    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(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)
    
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):
num = int(input())

if num == 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 i in range(0, 2)]))

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

Solution (Python):
def main():
    if int(input()) == 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")
else:
    a = int(input())
    b = int(input())
    print(a+b)

Solution (Python):
a=input()
if a=='1':
  print("Hello World")
else:
  b=input()
  c=input()
  print(int(b)+int(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')
elif n == 2:
    A, B = [int(input()) for i in range(2)]
    print(A + B)
else:
    raise ValueError

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

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

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:
    print(sum([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):
age = int(input())

if age == 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:
  b=int(input())
  c=int(input())
  print(b+c)

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")
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%2!=0 else int(input())+int(input()))

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

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"
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):
N = 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:
        print(int(input()) + int(input()))


if __name__ == '__main__':
    main()

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

Solution (Python):
i = input; 
print(eval(i() + '+' + i()) if '1' < i() else 'Hello World');

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

Solution (Python):
def main():
    n=int(input())
    if n==1:
        return "Hello World"
    else:
        return int(input())+int(input())
print(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):
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):
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")
elif N == "2":
    a,b = [int(input()) for i in range(2)]
    print(a+b)

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

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, 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):
import sys

def main(data):
    if data[0] == '1':
        print('Hello World')
    elif data[0] == '2':
        print(str(int(data[1]) + int(data[2])))
    else:
        print('3 or more years old')
if __name__ == '__main__':
    data = [line.strip() for line in sys.stdin]
    main(data)

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()
if a == '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, b = int(input()), int(input())
    print(a + b)

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

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

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

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 ==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")
if n == 2:
    print(int(input()) + int(input()))

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

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

else:
    for i in range(2):
        sum_tmp = int(input())
        sum += sum_tmp

    print(sum)

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

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())
  C=A+B
  print(C)
else:
  print('Hello World')

Solution (Python):



def main():
    """Function."""
    n = int(input())
    if n == 1:
        print("Hello World")
    elif n == 2:
        print(int(input()) + int(input()))


if __name__ == "__main__":
    main()

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:
	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):
N=int(input())

if N>=3 or N<=0:
  print("error")
  
elif N==1:
  print("Hello World")
  
else:
  A=int(input())
  B=int(input())
  print(A+B)

Solution (Python):
if input() == "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")
if N == 2:
  A = int(input())
  B = int(input())
  print("{}".format(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):
if  input() == "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(0)
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")
    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')
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):
a=input;print("Hello World" if a()=='1' else int(a())+int(a()))

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):
def abc112_a():
    n = int(input())
    if n == 1:
        return "Hello World"
    else:
        a = int(input())
        b = int(input())
        return a + b


print(abc112_a())

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):
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')
elif N == 2:
    
    A = int(input())
    B = int(input())
    
    if A < 1 or A > 9 or B < 1 or B > 9:
        SystemExit
    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 == 2:
  A = int(input())
  B = int(input())
  print(A + B)
elif N == 1:
  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")
else:
  n1=int(input())
  n2=int(input())
  print(n1+n2)

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

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