import itertools
n=int(input())
a=list(map(int,input().split()))
b=list(map(int,input().split()))
l=[]
for p in itertools.permutations(a,n):
    score=0
    for i in range(n):
        score+=max(0,p[i]-b[i])
    l.append(score)
print(l.count(max(l)))