from itertools import permutations
def main():
    N = int(input())
    a = list(map(int, input().split()))
    b = list(map(int, input().split()))
    points = {}
    for p in permutations(a):
        point = 0
        for x, y in zip(p, b):
            point += max(0, x-y)
        if point not in points:
            points[point] = 0
        points[point] += 1
    mkey = max(points.keys())
    print(points[mkey])
main()