#include <bits/stdc++.h>
#define rep(i,n) for(int i=0;i<(n);++i)
using namespace std;
using ll = long long;

int main(){
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    
    int n,k;
    cin >> n >> k;
    vector<ll> a(n);
    rep(i,n) cin >> a[i];
    int ans = 0;
    auto dfs = [&](auto dfs, ll x,int c,int i) -> void {
        if(c==k){
            if(x%998244353<=x%998) ans++;
            return;
        }
        for(int j = i+1;j<n-(k-c)+1;j++){            
            dfs(dfs,(x+a[j]),c+1,j);
        }
    };
    dfs(dfs,0,0,-1);
    cout << ans%998 << endl;
}