from itertools import permutations
n = int(input())
a = list(map(int, input().split()))
b = list(map(int, input().split()))
l = []
for p in permutations(a, n):
    score = 0
    for i in range(n):
        score += max(0, p[i] - b[i])
    l.append(score)
print(l.count(max(l)))