import itertools

n=int(input())
a=[*map(int,input().split())]
b=[*map(int,input().split())]
A=[*itertools.permutations(a)]
chk=[]
for i in A:
    cnt=0
    for j in range(n):
        if i[j]>b[j]:
            cnt+=i[j]-b[j]
    chk.append(cnt)
print(sum(max(chk)==i for i in chk))