import sys
input=sys.stdin.readline
def I(): return int(input())
def MI(): return map(int, input().split())
def LI(): return list(map(int, input().split()))

N=I()
A=LI()
B=LI()

import itertools

ans=0
M=-1

for ite in itertools.permutations(A, N):
    temp=0
    for i in range(N):
        a=ite[i]
        b=B[i]
        if a>b:
            temp+=a-b
    if temp>M:
        ans=1
        M=temp
    elif temp==M:
        ans+=1

print(ans)