from collections import *
from itertools import permutations

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

for p in permutations(a):
    score = 0
    
    for pi, bi in zip(p, b):
        score += max(0, pi-bi)
    
    cnt[score] += 1

M = max(cnt.keys())
print(cnt[M])