from collections import defaultdict
from itertools import permutations
N = int(input())
A = list(map(int, input().split()))
B = list(map(int, input().split()))
ans = defaultdict(int)

for pat in permutations(A):
    memo = 0
    for a, b in zip(pat, B):
        if a > b:
            memo += a - b
    ans[memo] += 1

max_key = max(ans.keys())
print(ans[max_key])