#include<bits/stdc++.h>
using namespace std;
const int INF = 1<<30;
const int MOD = 998244353;
//const long long INF = 1LL<<60;
using graph = vector<vector<int>>;
using ll = long long;


int main(){
    int n;
    cin >> n;
    vector<int> a(n);
    for (int i=0; i < n; i++) cin >> a[i];
    sort(a.begin(), a.end());
    
    ll ans = 0;
    for (int i=0; i < n; i++){
        ans = ans * 10 + a[i];
        ans %= MOD;
    }
    cout << ans << endl;
}