from itertools import permutations
n = int(input())
a = list(map(int, input().split()))
b = list(map(int, input().split()))
ma = 0
ans = 0
for x in permutations(a):
    t = 0
    for i in range(n):
        t += max(0, x[i] - b[i])
    if t > ma:
        ans = 1
        ma = t
    elif t == ma:
        ans += 1
print(ans)