#include <bits/stdc++.h>

using namespace std;
using ll = long long;

int main(){
    cin.tie(nullptr);
    ios_base::sync_with_stdio(false);

    ll N, A, ans=0;
    cin >> N;
    vector<ll> v;

    for (int i=0; i<N; i++){
        cin >> A;
        v.push_back(A);
    }

    const ll modc = 998244353;

    sort(v.begin(), v.end());

    for (auto x : v){
        x %= modc;
        ans *= 10;
        ans += x;
        ans %= modc;
    }

    cout << ans << endl;

    return 0;
}