from itrtools import permutations
n=int(input())
a=[int(x)for x in input().split()]
b=[int(s)for s in input().split()]
d={}
for x in permutations(a):
    t=0
    for i in range(n):
        t+=max(x[i]-b[i],0)
    d.setdefault(t,0)
    d[t]+=1
print(d[max(d)])