import itertools

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

l = [x for x in range(N)]
per = itertools.permutations(l)

score = []
for case in per:
	res = 0
	num = 0
	for i in case:
		if(a[i] - b[num] > 0): res += a[i] - b[num]
		num += 1
	score.append(res)

score.sort(reverse = True)
MAX = score[0]
ans = 0
for sc in score:
	if(sc == MAX): ans += 1
	else: break

print(ans)