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 = []
  for a in permutations(A):
    tmp = 0
    for j in range(n):
      tmp += max(a[j]-B[j], 0)
    ans.append(tmp)
  print(ans.count(max(ans)))
main()