N = int(eval(input()))

if N == 1:

  print('Hello World')

else:

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

n = int(eval(input()))

if n == 1:

  print('Hello World')

else :

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

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

-N = int(eval(input())) -if N == 1: +n = int(eval(input())) +if n == 1: