MOD = 998244353

N = int(input())
X = list(map(int, input().split()))
Y = list(map(int, input().split()))

fact = [1] * (N + 1)
for i in range(1, N + 1):
    fact[i] = fact[i - 1] * i % MOD

g = [(X[i], 0) for i in range(N)] + [(Y[i], 1) for i in range(N)]
g.sort()
# print(g)
cnt = [0, 0]
for i in range(N):
    cnt[g[i][1]] += 1

# print(cnt)
print(fact[cnt[0]] * fact[cnt[1]] % MOD)