#!/usr/local/bin/ruby
class EratosthenesLikeSieve
  def initialize(*arg)
    @n,@k = arg
  end
  def ans
    r = 0
    sigma = Array.new(@n+1,0)
    pb = 1-@k
    i=2
    while i <= @n
      last = @n/i
      j=2
      while j<=last
        sigma[j*i]+=1
        j+=1
      end
      r += pb**sigma[i]
      i+=1
    end
    r
  end
end
### END: class EratosthenesLikeSieve
iod = STDIN
n,k = iod.gets.split
puts EratosthenesLikeSieve.new(n.to_i,k.to_f).ans
exit 0