from collections import defaultdict
import itertools as it

n = int(input())
a = list(map(int, input().split()))
b = list(map(int, input().split()))

cnt = defaultdict(int)
for ap in it.permutations(a, n):
  s = sum(max(0, ap[i] - b[i]) for i in range(n))
  cnt[s] += 1

x = max(list(cnt.keys()))
print(cnt[x])