#include <bits/stdc++.h>
using namespace std;
#include <atcoder/all>
using namespace atcoder;
#define rep(i, n) for(int i=0;i<(n);++i)
#define rep1(i, n) for(int i=1;i<=(n);i++)
#define ll long long
using mint = modint998244353;
using P = pair<ll,ll>;
using lb = long double;
using T = tuple<ll, ll, ll>;
#ifdef LOCAL
#  include <debug_print.hpp>
#  define dbg(...) debug_print::multi_print(#__VA_ARGS__, __VA_ARGS__)
#else
#  define dbg(...) (static_cast<void>(0))
#endif

int main()
{
    int n, k;
    cin >> n >> k;
    ll ans = 0;
    vector<ll> a(n);
    rep(i,n) cin >> a[i];
    auto dfs = [&](auto dfs, int u, int f, ll g) {
        if(u==n){
            if(f!=k) return;
            if(g%998244353<=g%998) ans++;
            return;
        }
        dfs(dfs, u+1, f,g);
        dfs(dfs, u+1, f+1, g+a[u]);
    };
    dfs(dfs, 0, 0, 0);
    cout << ans%998 << endl;
    return 0;
}