#!/usr/bin/env ruby

require 'zipf'

a = ReadFile.new ARGV[0]
b = ReadFile.new ARGV[1]
max = ARGV[2].to_i

a_out = WriteFile.new ARGV[0]+".out"
b_out = WriteFile.new ARGV[1]+".out"

while line = a.gets
  line1 = b.gets
  if line.strip.split.size <= max and line1.strip.split.size <= max
    a_out.write line
    b_out.write line1
  end
end

a.close
b.close
a_out.close
b_out.close