n=int(input())
a=list(map(int,input().split()))
b=list(map(int,input().split()))
maxa=-1
ans=1
from itertools import permutations as per
kai=list(per(list(range(1,n+1))))
for i in range(len(kai)):
    sum=0
    j=0
    for x in kai[i]:

        sum+=max(a[x-1]-b[j],0)
        j+=1
    if sum==maxa:
        ans+=1
    elif sum>maxa:
        maxa=sum
        ans=1

print(ans)