n=int(input())
A=list(map(int,input().split()))
B=list(map(int,input().split()))

from itertools import permutations 
ans=[]
for seq in permutations(range(n)):
    cnt=0
    for i in range(n):
        cnt+=max(A[seq[i]]-B[i],0)
        
    ans.append(cnt)
    
num=max(ans)
print(ans.count(num))