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

int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    long long N,K; cin >> N >> K;
    vector<long long> A(N);
    for(auto &a : A) cin >> a;

    long long answer = 0;
auto dfs = [&](auto dfs,int pos,int pick,long long sum) -> void {
    if(pick == K){
        if(sum%998244353 <= sum%998) answer++;
        return;
    }
    if(pos == N) return;

    for(int i=pos; i<N; i++){
        dfs(dfs,i+1,pick+1,sum+A.at(i));
    }
};
    dfs(dfs,0,0,0);
    cout << answer%998 << endl;
}