#include<bits/stdc++.h>
using namespace std;
using ll=long long;
ll N,K,A[28];
int main()
{
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cin>>N>>K;
    for(int i=0;i<N;i++)cin>>A[i];
    vector<int>a(N,0);
    for(int i=0;i<K;i++)a[i]=1;
    reverse(a.begin(),a.end());
    ll ans=0;
    do
    {
        ll sum=0;
        for(int i=0;i<N;i++)if(a[i])sum+=A[i];
        if(sum%998244353<=sum%998)ans++;
    }while(next_permutation(a.begin(),a.end()));
    cout << ans%998 << endl;
}