#include<bits/stdc++.h>
using namespace std;
using ll = long long;
#define rep(i,m,n) for(int i=m; i<n; ++i)
#define repl(i,m,n) for(ll i=m; i<n; ++i)

int main(){
    int N;
    cin >> N;
    vector<ll> A(N);
    rep(i, 0, N) cin >> A[i];

    sort(A.begin(), A.end());
    
    const ll mod = 998244353;
    ll x = 0LL;
    rep(i, 0, N){
        x = ((10LL*x) % mod + (A[i] % mod)) % mod;
    }
    cout << x << endl;
    
    return 0;
}