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

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

Solution (Python):
l=int(input())
if l==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):
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):
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")
elif n == 2:
	ab = [int(input()) for i in range(2)]
	print(sum(ab))

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:
    print(sum([int(input()), int(input())]))

Solution (Python):
def solve():
    age = int(input())
    if age == 1:
        return "Hello World"
    a, b = list(int(input()) for _ in range(2))
    return a + b


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

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(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):
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:
  b=[int(input()) for i in range(2)]
  c=b[0]+b[1]


  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):
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):
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,*t=map(int,open(0));print(n%2*'Hello World'or sum(t))

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

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


if __name__ == "__main__":
    test()

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

Solution (Python):
import math





inputa = input().split()


a = int(inputa[0])






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

elif a == 2:
    inputb = input().split()
    inputc = input().split()

    b = int(inputb[0])
    c = int(inputc[0])
    
    print(b + c)

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

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

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

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

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

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

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

Solution (Python):
n,*d=map(int,open(0).read().split())
print((sum(d),"Hello World")[n==1])

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

Solution (Python):
n,*a=map(int,open(0).read().split()); print('Hello World' if n==1 else sum(a))

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

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

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

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

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

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

Solution (Python):
n1 = int(input())

r1 = "Hello World"

if n1 == 2:
    n2 = int(input())
    n3 = int(input())

    r1 = str(n2 + n3)
print(r1)

Solution (Python):
N = int(input())
if N % 2 == 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):
s = int(input())
if s == 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(int(a+b))

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

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

if num == 2:
    a = int(input())
    b = int(input())
    print(a+b)
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):
def main():
    A = int(input())
    if A == 2:
        a = int(input())
        b = int(input())
        print(int(a+b))

    else:
        print('Hello World')



if __name__ == '__main__' :
    main()

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 == 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' )
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 == 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:
    li = [int(input()) for _ in range(2)]
    print(sum(li))

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

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

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

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

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

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

Solution (Python):
import copy

def main():

    N = int(input())

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

if __name__== "__main__":
    main()

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

n = int(input())

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

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

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

Solution (Python):


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

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

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

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

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

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


if __name__ == "__main__":
    main()

Solution (Python):
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):



x = int(input())



def func1():
    print('Hello World')
    
def func2():
    A = int(input())
    B = int(input())    
    print(A + B)

if x == 1:
    func1()
else:
    func2()

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

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

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

if n==1:
	print('Hello World')
else:
	x=list(int(input()) for _ in range(2))
	print(x[0]+x[1])

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

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

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

Solution (Python):



N = int(input())

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


print(ans)

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: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):
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 == 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 = input()

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

Solution (Python):
if 1 == int(input()):
    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 collections import defaultdict
from collections import deque
from heapq import heappush, heappop
import sys
import math
import bisect
import random
import itertools
sys.setrecursionlimit(10**5)
stdin = sys.stdin
def LI(): return list(map(int, stdin.readline().split()))
def LF(): return list(map(float, stdin.readline().split()))
def LI_(): return list(map(lambda x: int(x)-1, stdin.readline().split()))
def II(): return int(stdin.readline())
def IF(): return float(stdin.readline())
def LS(): return list(map(list, stdin.readline().split()))
def S(): return list(stdin.readline().rstrip())
def IR(n): return [II() for _ in range(n)]
def LIR(n): return [LI() for _ in range(n)]
def FR(n): return [IF() for _ in range(n)]
def LFR(n): return [LI() for _ in range(n)]
def LIR_(n): return [LI_() for _ in range(n)]
def SR(n): return [S() for _ in range(n)]
def LSR(n): return [LS() for _ in range(n)]
mod = 1000000007
inf = float('INF')


def A():
    n = II()
    if n == 1:
        print("Hello World")
    else:
        print(II()+II())
    return


def B():
    return


def C():
    n = II()
    xyh = LIR(n)
    xyh.sort(key = lambda x:x[2], reverse = True)
    x1, y1, h1 = xyh[0]
    del xyh[0]
    for x in range(101):
        for y in range(101):
            h = abs(x - x1) + abs(y - y1) + h1
            flg = True
            for xn, yn, hn in xyh:
                if max(h - abs(x - xn) - abs(y - yn), 0) == hn:
                    continue
                flg = False
                break
            if flg:
                print(x, y, h)
                return 
    return


def D():
    n, m = LI()
    ans = 1
    for i in range(1,int(math.sqrt(m)+1)):
        if m % i == 0:
            a = m // i
            
            if a * n <= m:
                ans = max(ans, a)
            if i * n <= m:
                ans = max(ans, i)
    print(ans)
    return


def E():
    return


def F():
    return


def G():
    return


def H():
    return


if __name__ == '__main__':
    A()

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):
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 == 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')

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

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

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

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

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

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

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

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(sum([int(input()) for _ in range(2)]))

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

if one == 1:
    print("Hello World")
    exit()
elif one == 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")
    exit()

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

Solution (Python):
nl = lambda: list(map(int, input().split()))
sl = lambda: input().split()
n = lambda: int(input())
s = lambda: input()

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

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

print(int(input()) + int(input()))

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

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

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

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

Solution (Python):
n=int(input())
ans=0
if n==1:
  print("Hello World")
  
else:
  for i in range(2):
    ans+=int(input())
  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):
import sys
n = int(input())
if n == 1:
	print('Hello World')
	sys.exit()
print(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):
print("Hello World" if input() == "1" else 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:
  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')
if(N == 2):
    List = list(int(input()) for i in range(2))
    print(List[0] + List[1])

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):
N=int(input())
if N==1:
    print('Hello World')
else:
    l = [int(input()) for i in range(2)]
    print(l[0]+l[1])

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

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

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