from itertools import permutations

n = int(input())
A = list(map(int, input().split()))
B = list(map(int, input().split()))

dic = {}
for x in permutations(A):
    t = 0
    for i in range(n):
        t += max(x[i] - B[i], 0)
    dic.setdefault(t, 0)
    dic[t] += 1

print(dic[max(dic)])