def main():
  from sys import stdin
  from itertools import permutations
  readline=stdin.readline
  n = int(readline())
  A = list(map(int, readline().split()))
  B = list(map(int, readline().split()))
  ans = []
  L = [x for x in range(n)]
  for i in permutations(L):
    tmp = 0
    k = 0
    for j in i:
      tmp += max(A[j]-B[k], 0)
      k += 1
    ans.append(tmp)
  print(ans.count(max(ans)))
main()