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