func main()
	var n: int :: cui@inputInt()
	var ans: int :: 0
	for i(3, n - 1)
		if(isOk(i) & isOk(n - i))
			do cui@print("\{i} \{n - i}\n")
			ret
		end if
	end for
	do cui@print("-1\n")
	
	func isOk(x: int): bool
		while(x <> 1)
			if(x % 2 = 1)
				ret true
			end if
			do x :/ 2
		end while
		ret false
	end func
end func