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

i = 0
m = 0
ans = 0
a.permutation do |a|
  s = 0
  a.each_with_index do |e, i|
    if e > b[i]
      s += e - b[i]
    end
  end
  if s > m
    ans = 1
    m = s
  elsif s == m
    ans += 1
  end
end

puts ans