#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using ld = long double;
using ull = unsigned long long;
using vll = vector<ll>;
using vvll = vector<vector<ll>>;
using P = pair<ll, ll>;
using vp = vector<pair<ll, ll>>;
#define mod 998244353
#define all(v) v.begin(), v.end()
#define resort(v) sort(v.rbegin(), v.rend())
#define rep(i, n) for (ll i = 0; i < n; ++i)
#define per(i, n) for (ll i = n - 1; i >= 0; --i)
#define rep2(i, a, n) for (ll i = a; i < n; ++i)
#define per2(i, a, n) for (ll i = n - 1; i >= a; --i)
#define chmin(a, b) a = min(a, b)
#define chmax(a, b) a = max(a, b)
const ll inf = 1ll << 60;
ll dx[] = {1,0,0,-1,1,-1,1,-1};
ll dy[] = {0,1,-1,0,1,1,-1,-1};

int main() {
    ll n,x=0;
    cin >> n;
    vll a(n);
    rep(i,n) cin >> a[i];
    sort(all(a));
    rep(i,n){
        x = x*10 + a[i];
        x %= mod;
    }
    cout << x << endl;
}