from itertools import permutations
N = int(input())
A = list(map(int,input().split()))
B = list(map(int,input().split()))
ans = 0
smax = 0
for z in permutations(A):
    cnt = 0
    for i in range(N):
        cnt += max(z[i]-B[i],0)
    if cnt>smax:
        smax = cnt
        ans = 1
    elif cnt==smax:
        ans += 1
print(ans)