N = gets.to_i

ans = [*0..N]
checked = Hash.new(false)

1.upto(N) do |i|
  next if checked[i]

  nums = [i]
  q = 2
  while i * q * q <= N
    nums << i * q * q
    q += 1
  end

  len = nums.size
  len.times do |i|
    ans[nums[i]] = nums[len - 1 - i]
    checked[nums[i]] = true
  end
end

puts ans[1..].join(' ')