def ascan; gets.split.map(&:to_i);end


def bitcount(x)
    return x.to_s(2).count("1")
end

n = gets.to_i

if n == 1
    p -1
    exit
end

1.upto([n-1,1000].min) do |a|
    b = n-a
    if bitcount(b) != 1 && bitcount(a) != 1
        puts "#{a} #{b}"
        exit
    end
end
p -1