#pragma GCC target("avx2")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#include<bits/stdc++.h>
#include<atcoder/all>
using namespace std;
using namespace atcoder;
using ll=long long;

void IO(){
  ios::sync_with_stdio(false);
  std::cin.tie(nullptr);
  cout<<fixed<<setprecision(20);
}

ll P(ll a,ll mod){
  ll res=1;
  for(ll i=1;i<=a;i++){
    res*=i;
    res%=mod;
  }
  return res;
}

int main(){
  IO();
  ll n;
  cin>>n;
  vector<ll> x(n);
  for(ll i=0;i<n;i++){
    cin>>x[i];
  }
  vector<ll> y(n);
  for(ll i=0;i<n;i++){
    cin>>y[i];
  }
  sort(x.begin(),x.end());
  sort(y.rbegin(),y.rend());
  ll left,right;
  for(ll i=0;i<n-1;i++){
    if(x[i]<y[i]&&x[i+1]>y[i+1]){
      left=(i+1);
      right=n-(i+1);
      break;
    }
  }
  ll mod=998244353;
  cout<<(P(left,mod)*P(right,mod))%mod<<endl;
}