from itertools import permutations

n = int(input())
a = list(map(int, input().split()))
b = list(map(int, input().split()))
seq = list(permutations(a))
ans = 0
max_score = 0
for se in seq:
    score = 0
    for i in range(n):
        score += max(0, se[i] - b[i])
    if score > max_score:
        max_score = score
        ans = 1
    elif score == max_score:
        ans += 1
print(ans)