# include <vector>
# include <iostream>
# include <iomanip>
# include <algorithm>
# include <functional>
# include <bitset>
# include <queue>
# include <deque>
# include <tuple>
# include <set>
# include <map>
# include <chrono>
# include <random>

# define rep(i,a,b) for (int i=a; i<b; i++)
# define all(a) a.begin(), a.end()
using lint = long long;
template <class T>
using v = std::vector<T>;

lint mod = 998244353LL;

using namespace std;



int main() {
   std::ios::sync_with_stdio(false);
   std::cin.tie(0);

   int n; cin >> n;
   v<lint> a(n); rep(i,0,n) cin >> a[i];
   sort(all(a));
   lint res = a[0];
   rep(i,1,n) {
    res = (res*10LL + a[i])%mod;
   }

   cout << res << endl;
   return 0;
}