from itertools import permutations

N = int(input())
A = list(map(int, input().split()))
B = list(map(int, input().split()))
P = [i for i in range(N)]

maxpoint = 0
maxcount = 0
for p in permutations(P):
    point = 0
    j = 0
    for i in p:
        point += max(0, A[i] - B[j])
        j += 1
    if point > maxpoint:
        maxpoint = point
        maxcount = 1
    elif point == maxpoint:
        maxcount += 1
print(maxcount)