n = int(input())
fact = [1] * (n + 1)
MOD = 998244353
for i in range(1, n + 1):
    fact[i] = fact[i - 1] * i % MOD

x = list(map(int, input().split()))
y = list(map(int, input().split()))
xy = list(sorted(x + y))
is_low = {}
for i in range(2 * n):
    is_low[xy[i]] = i < n

cnt_x = 0
cnt_y = 0
for xx in x:
    cnt_x += is_low[xx]
print(fact[n - cnt_x] * fact[cnt_x] % MOD)