n = int(input())

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

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

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

-n = int(input()) -if n == 1: -    print("Hello World") -elif n == 2: -    print(int(input()) + int(input())) +print("Hello World" if int(input()) == 1 else (int(input()) + int(input())))