#include <bits/stdc++.h>
using namespace std;

#define rep(i, n) for (int i = 0; i < (int)n; i++)
using ll = long long int;
#define MOD 998244353

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