#include <bits/stdc++.h>
using namespace std;

int main() {
  int N, K, Ans = 0; cin >> N >> K;
  vector<int> A(N); for (int &a : A) cin >> a;

  auto solve = [&](auto solve, int X, int Y, long long S) -> void {
    if (X == K) {
      if (S % 998244353 <= S % 993) Ans++;
      return;
    }
    for (int i = Y + 1; i < N; i++)
      solve(solve, X + 1, i, S + A.at(i));
  };

  solve(solve, 0, -1, 0);
  cout << Ans % 998 << endl;
}