n = gets.to_s.to_i
a = gets.to_s.split.map(&:to_i).sort
b = gets.to_s.split.map(&:to_i)

count = 0
current_max_score = 0
a.permutation do |array|
  i = 0
  score = 0
  while i < n
    diff = array[i] - b[i]
    score += diff if diff > 0
    i += 1
  end
  if score > current_max_score
    count = 1
    current_max_score = score
  elsif score == current_max_score
    count += 1
  end
end

puts count