import math

def ip():return int(eval(input()))

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



n=ip()

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

else:

    a=ip()

    b=ip()

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

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

else:print((int(eval(input()))+int(eval(input()))))
import math


def ip():
    return int(eval(input()))


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


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

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

-import math - - -def ip(): -    return int(eval(input())) - - -def imp(): -    return list(map(int, input().split())) - - -n = ip() +n = int(eval(input())) -    a = ip() -    b = ip() -    print((a + b)) +    print((int(eval(input())) + int(eval(input()))))