from itertools import permutations
from sys import stdin
pin=stdin.readline
def main():
  N=int(pin())
  a=list(map(int,pin().split()))
  b=list(map(int,pin().split()))
  p=permutations(list(range(N)))
  ans=0
  cnt=0
  for i in p:
    sc=0
    for j in range(N):
      if a[i[j]]>b[j]:
        sc+=a[i[j]]-b[j]
    if sc==ans:
      cnt+=1
    elif sc>ans:
      ans=sc
      cnt=1
  print(cnt)
  return

main()