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

Z = []
for i in range(N):
    Z.append((X[i], 'x'))
    Z.append((Y[i], 'y'))
Z.sort()

cntx, cnty = 0, 0
for i in range(N):
    num, sign = Z[i]
    if sign == 'x':
        cntx += 1
    else:
        cnty += 1

MOD = 998244353
def factorial(n):
    res = 1
    for i in range(1, n + 1):
        res *= i
        res %= MOD
    return res

ans = factorial(cntx) * factorial(cnty)
ans %= MOD
print(ans)