N = eval(input())

if int(N) == 1:

    print("Hello World")

else:

    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))

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

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