#include <algorithm>
#include <iostream>
#include <vector>
using namespace std;
using ll = long long;

ll mod = 998244353;

int main() {
    ll N;
    cin >> N;
    vector<ll> A(N);
    for (ll i = 0; i < N; i++) {
        cin >> A[i];
    }
    sort(A.begin(), A.end());
    ll x = 0;
    for (ll i = 0; i < N; i++) {
        x = (x * 10LL) % mod;
        x = (x + (A[i] % mod)) % mod;
    }
    cout << x << endl;
}