x = gets.to_i

f = (0..x).map{|i| i-1 }
2.upto(x) do |i|
  i.step(x, i){|j| f[j] -= 1 }
end

p = [] * (x/2).ceil
1.upto(x/2) do |a|
  b = x - a
  score = (f[a]-f[b]).abs
  p[score] ||= []
  p[score] << a
  p[score] << b if b != a
end

ans = p.find{|pi| !pi.nil? }
ans.sort.each{|a| puts "#{a} #{x-a}" }