from itertools import permutations


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

ans = 0
score = -10
for p in permutations(A):
    tot = 0
    for x, y in zip(p, B):
        tot += max(0, x - y)
    if tot > score:
        score = tot
        ans = 1
    elif tot == score:
        ans += 1
print(ans)