#include <bits/stdc++.h>
using namespace std;
#ifdef LOCAL
  #include "settings/debug.cpp"
  #define _GLIBCXX_DEBUG
#else
  #define Debug(...) void(0)
#endif
using ll = long long;
using ull = unsigned long long;
#define rep(i, n) for (int i = 0; i < (n); ++i)

int main() {
  int n,k;cin>>n>>k;
  vector<ll> a(n);
  rep(i,n) cin >> a[i];
  int ans = 0;
  rep(bit, 1 << n) {
    if (popcount(ull(bit)) != k) continue;
    ll sum = 0;
    rep(i,n) {
      if (bit & (1 << i))  sum += a[i];
    }
    if (sum % 998244353 <= sum % 998) ans++;
  }
  cout << ans % 998 << endl;
  return 0;
}