from itertools import permutations as perm
n = int(input())
a = list(map(int, input().split()))
b = list(map(int, input().split()))
mx = -1
for p in perm(a):
    mx = max(mx, sum(max(0, x-y) for x, y in zip(p, b)))
cnt = 0
for p in perm(a):
    cnt += sum(max(0, x-y) for x, y in zip(p, b)) == mx
print(cnt)