import sys
input = sys.stdin.readline


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

from itertools import permutations

L=list(permutations(range(N)))

MAX=0
ANS=0

for l in L:
    R=0
    for i in range(N):
        if A[l[i]]>B[i]:
            R+=A[l[i]]-B[i]

    if R==MAX:
        ANS+=1
    elif R>MAX:
        MAX=R
        ANS=1

print(ANS)