N=int(input())
a=list(map(int,input().split()))
b=list(map(int,input().split()))
ans=[]
import itertools
S=""
for i in range(N):
    S+=str(i)
data=list(itertools.permutations(S))
for i in range(len(data)):
    d=list(data[i])
    ans_pre=0
    for j in range(N):
        if a[int(d[j])]-b[j]>0:
            ans_pre+=a[int(d[j])]-b[j]
    ans.append(ans_pre)
print(ans.count(max(ans)))