#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using ll = long long;
#define rep(i,n) for(int i=0;i<(int)(n);i++)
using mint = atcoder::modint998244353;

int main(){
	int n;
	cin>>n;
	vector<int> x(n),y(n);
	rep(i,n) cin>>x.at(i);
	rep(i,n) cin>>y.at(i);
	sort(x.begin(),x.end());
	reverse(x.begin(),x.end());
	sort(y.begin(),y.end());
	reverse(y.begin(),y.end());
	rep(i,n){
		if(x.back()>y.back()){
			y.pop_back();
		}else{
			x.pop_back();
		}
	}
	vector<mint> fac(n+1);
	fac.at(0)=1;
	for(int i=1;i<=n;i++){
		fac.at(i)=fac.at(i-1)*i;
	}
	cout<<(fac.at(x.size())*fac.at(y.size())).val()<<endl;
}