age = int(eval(input()))



if age == 1:

    print('Hello World')

elif age == 2:

    a = int(eval(input()))

    b = int(eval(input()))

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



if n == 1:

    print('Hello World')

else:

    a = int(eval(input()))

    b = int(eval(input()))

    print((a + b))

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

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

-age = int(eval(input())) -if age == 1: +n = int(eval(input())) +if n == 1: -elif age == 2: +else: