using System.Collections.Generic;
using System.Linq;
using System;

public static class combi
{
    public static IEnumerable<IEnumerable<T>> Comb<T>(this IEnumerable<T> items, int r)
    {
        if (r == 0)
        {
            yield return Enumerable.Empty<T>();
        }
        else
        {
            var i = 1;
            foreach (var x in items)
            {
                var xs = items.Skip(i);
                foreach (var c in Comb(xs, r - 1))
                    yield return c.Before(x);
                i++;
            }
        }
    }
    public static IEnumerable<T> Before<T>(this IEnumerable<T> items, T first)
    {
        yield return first;
        foreach (var i in items)
            yield return i;
    }
}

public class Hello
{
    public static int MOD = 998244353;
    static void Main()
    {
        string[] line = Console.ReadLine().Trim().Split(' ');
        var n = int.Parse(line[0]);
        var k = int.Parse(line[1]);
        line = Console.ReadLine().Trim().Split(' ');
        var a = Array.ConvertAll(line, int.Parse);
        getAns(n, k, a);
    }
    static bool calc(int[] a, int[] p)
    {
        var s998 = 0L;
        var sMOD = 0L;
        foreach (var x in p)
        {
            s998 += a[x];
            s998 %= 998;
            sMOD += a[x];
            sMOD %= MOD;
        }
        return sMOD <= s998;
    }
    static void getAns(int n, int k, int[] a)
    {
        var c = 0L;
        foreach (var x in Enumerable.Range(0, n).Comb(k))
        {
            var p = x.ToArray();
            if (calc(a, p)) c++;
        }
        Console.WriteLine(c %= 998);
    }
}