from itertools import permutations
N=int(input())
a=list(map(int,input().split()))
b=list(map(int,input().split()))
t=0
score=0
bestscore=0
for x in list(permutations(a)):
    for i in range(N):
        score+=max((x[i]-b[i]),0)
       
    if(score>bestscore):
        bestscore=score
        t=1
    if(score==bestscore):
        t+=1
print(t)