#include <iostream>
#include <bits/stdc++.h> 
typedef long long ll; 
 
ll M = 998244353ll;  
 
using namespace std;
 
int main() {
	ios_base::sync_with_stdio(false); 
    cin.tie(NULL); cout.tie(NULL); 
     ll n; cin>>n; 
    vector<ll> a(n); 
    for(ll i = 0; i < n ; i++){
        cin>>a[i]; 
        a[i]*=(i+1ll)*(n - i); 
    }
    vector<ll>b(n); 
    for(int i = 0; i < n;i++) cin>>b[i]; 
    sort(a.rbegin(), a.rend()); 
    sort(b.begin(), b.end()); 
    ll ans = 0; 
     for(int i = 0;i<n;i++){
         ll val = (a[i])%M; 
         ll v2 = b[i]%M; 
         val = (val*v2)%M; 
         ans = (ans + val)%M; 
     }
     cout<<ans<<endl; 
}
 

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

MgoxIDMKNCAyCgo=

2
1 3
4 2