from itertools import permutations
from collections import defaultdict


def main():
    n = int(input())
    a = [int(k) for k in input().split()]
    b = [int(k) for k in input().split()]
    cnt = defaultdict(int)
    idx = 0
    for p in permutations(b):
        score = sum([max(aa - bb, 0) for aa, bb in zip(a, p)])
        cnt[score] += 1
        idx = max(idx, score)
    print(cnt[idx])


if __name__ == '__main__':
    main()