io = STDIN
io.gets
aa = io.gets.split(' ').map(&:to_i)
ba = io.gets.split(' ').map(&:to_i)

max_point = 0
max_point_count = 0
aa.permutation do |a_seq|
  sum = 0
  a_seq.zip(ba) do |a, b|
    point = a - b
    sum += point if point.positive?
  end
  if max_point < sum
    max_point = sum
    max_point_count = 1
  elsif max_point == sum
    max_point_count += 1
  end
end
puts max_point_count