import itertools
N = int(input())
lsa = map(int,input().split())
lsb = list(map(int,input().split()))
lsp = itertools.permutations(lsa)
ans = 0
ansls = []
for p in lsp:
    ii = 0
    for i in range(N):
        ii += max(p[i]-lsb[i],0)
    ansls.append(ii)
    ans = max(ans,ii)
print(ansls.count(ans))