*a,=list(map(int,open(0).read().split()))

print((a[1]+a[2]if a[0]>1else'Hello World'))
i=input;print((eval(i()+'+'+i())if'1'<i()else'Hello World'))
(*a,) = list(map(int, open(0).read().split()))
print((a[1] + a[2] if a[0] > 1 else "Hello World"))

i = input
print((eval(i() + "+" + i()) if "1" < i() else "Hello World"))

-(*a,) = list(map(int, open(0).read().split())) -print((a[1] + a[2] if a[0] > 1 else "Hello World")) +i = input +print((eval(i() + "+" + i()) if "1" < i() else "Hello World"))