#yuki1279
import itertools
n=int(input())
a=list(map(int,input().split()))
b=list(map(int,input().split()))
m=-1
res=0
for l in itertools.permutations(a):
 s=0
 for x,y in zip(l,b):
  s+=max(x-y,0)
 if m==s:
  res+=1
 elif m<s:
  m=s
  res=1
print(res)