#include <bits/stdc++.h>
using namespace std;
using ll=long long;
using pll=pair<ll,ll>;
using tll=tuple<ll,ll,ll>;
using ld=long double;
const ll INF=(1ll<<60);
#define rep(i,n) for (ll i=0;i<(ll)(n);i++)
#define all(v) v.begin(),v.end()
template<class T> inline bool chmin(T &a,T b){
    if(a>b){
        a=b;
        return true;
    }
    return false;
}
template<class T> inline bool chmax(T &a,T b){
    if(a<b){
        a=b;
        return true;
    }
    return false;
}
int main(){
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    const ll mod=998244353;
    ll n;
    cin >> n;
    vector<string> a(n);
    rep(i,n) cin >> a[i];
    vector<pair<string,string>> v(n);
    rep(i,n){
        string b=a[i];
        rep(j,20) b+=a[i];
        v[i]={b,a[i]};
    }
    sort(all(v));
    string s;
    rep(i,n) s+=v[i].second;
    reverse(all(s));
    ll ans=0,r=1;
    for(auto i:s){
        ans+=(i-'0')*r%mod;
        ans%=mod;
        r*=10;
        r%=mod;
    }
    cout << ans << '\n';
}