#include <bits/stdc++.h>

using namespace std;

typedef long long ll;
typedef pair<ll,ll> P;
#define REP(i,n) for(int i=0;i<int(n);i++)

const ll MOD=998244353;


int main(void){
	cin.tie(nullptr);  ios_base::sync_with_stdio(false);
	ll i,j,k;

	ll N;
	cin >> N;

	vector<P> v;
	for(i=0;i<N;i++){
		ll X;
		cin >> X;
		v.push_back(P(X,0));
	}

	for(i=0;i<N;i++){
		ll Y;
		cin >> Y;
		v.push_back(P(Y,1));
	}

	sort(v.begin(),v.end());

	ll a=0;
	for(i=0;i<N;i++){
		if(v[i].second==1) a++;
	}

	ll ans=1;
	for(i=1;i<=a;i++){
		ans*=i;
		ans%=MOD;
	}

	for(i=1;i<=N-a;i++){
		ans*=i;
		ans%=MOD;
	}


	cout << ans << endl;


	return 0;

}