using System;

public class Hello
{
    public static int MOD = 998244353;
    static void Main()
    {
        var n = int.Parse(Console.ReadLine().Trim());
        string[] line = Console.ReadLine().Trim().Split(' ');
        var a = Array.ConvertAll(line, long.Parse);
        getAns(n, a);
    }
    static void getAns(int n, long[] a)
    {
        Array.Sort(a);
        var x = 0L;
        foreach (var z in a)
        {
            x = x * 10 + z;
            x %= MOD;
        }
        Console.WriteLine(x);
    }
}