#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; }