from itertools import permutations

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

MAX = -1
ANS = 0
for b in permutations(B):
    TOTAL = 0
    for i, j in zip(A, b):
        TOTAL += [0, i-j][i > j]
    if TOTAL == MAX:
        ANS += 1
    elif TOTAL > MAX:
        MAX = TOTAL
        ANS = 1

print(ANS)