import itertools as itrt
ans=0
sum_max=-1
N=int(input())
a=list(map(int,input().split()))
b=list(map(int,input().split()))
for p in itrt.permutations(range(N)):
    sum_tmp=0
    for i in range(N):
        if a[p[i]]>b[i]:sum_tmp+=a[p[i]]-b[i]
        
    if sum_tmp>sum_max:
        sum_max=sum_tmp
        ans=1
    elif sum_tmp==sum_max:
        ans+=1
        
print(ans)