from collections import defaultdict
from itertools import permutations
from sys import stdin


def main():
    input = lambda: stdin.readline()[:-1]
    N = int(input())
    A = tuple(map(int, input().split()))
    B = tuple(map(int, input().split()))

    score = defaultdict(int)
    for a in permutations(A):
        n = sum([i - j for i, j in zip(a, B) if i > j])
        score[n] += 1
    ans = sorted(score.items(), reverse=1)
    print(ans[0][1])


main()