MOD = 998244353
N = int(input())
X = list(map(int, input().split()))
Y = list(map(int, input().split()))
X.sort()
Y.sort(reverse=True)
i = 0
while i < N and X[i] < Y[i]:
    i += 1
a = i
while i < N and X[i] == Y[i]:
    i += 1
b = i
# fact(a) * fact(N-b)が答え
cmax = max(a, N - b)
cmin = min(a, N - b)
tmp = 1
ans = 1
for i in range(1, cmax + 1):
    tmp *= i
    tmp %= MOD
    if i == cmin:
        ans *= tmp
    if i == cmax:
        ans *= tmp
ans %= MOD
print(ans)