import itertools

def solve(N, a, b):
    junretsu = itertools.permutations(a, N)
    cnt = 0
    saidai = 0
    for x in junretsu:
        total = sum(max(x[i] - b[i], 0) for i in range(N))
        if total > saidai:
            saidai = total
            cnt = 1
        elif total == saidai:
            cnt += 1

    return cnt


N = int(input())
a = list(map(int, input().split()))
b = list(map(int, input().split()))

print(solve(N, a, b))