n=int(input())
a=list(map(int,input().split()))
b=list(map(int,input().split()))
g=-1
c=0
from itertools import permutations
for p in permutations(list(range(n))):
  ng=sum(max(a[p[i]]-b[i],0) for i in range(n))
  if ng>g:
    g=ng
    c=1
  elif ng==g:
    c+=1
print(c)