import sys
from itertools import permutations
def I(): return int(sys.stdin.readline().rstrip())
def LI(): return list(map(int,sys.stdin.readline().rstrip().split()))


N = I()
A,B = LI(),LI()

ANS = []
for X in list(permutations([i for i in range(N)],N)):
    ANS.append(sum(max(0,A[X[i]]-B[i]) for i in range(N)))

print(ANS.count(max(ANS)))