mod = 1000000007
eps = 10**-9


def main():
    import sys
    from itertools import permutations
    input = sys.stdin.readline

    N = int(input())
    A = list(map(int, input().split()))
    B = list(map(int, input().split()))

    ma = 0
    cnt = 0
    for P in permutations(A):
        tmp = 0
        for i, a in enumerate(P):
            if a > B[i]:
                tmp += a - B[i]
        if tmp == ma:
            cnt += 1
        elif tmp > ma:
            ma = tmp
            cnt = 1
    print(cnt)


if __name__ == '__main__':
    main()