#include<bits/stdc++.h>
using namespace std;
using ll = long long;
int main() {
	int n, k; cin >> n >> k;
	ll ans = 0;
	vector<ll> a(n), c;
	for (int i = 0; i < n; i++) cin >> a[i];
	for (int i = 0; i < n - k; i++) c.push_back(0);
	for (int i = 0; i < k; i++) c.push_back(1);
	do {
		ll cnt = 0;
		for (int i = 0; i < n; i++) {
			if (c[i]) cnt += a[i];
		}
		if (cnt % 998244353 < cnt % 998) ans++;
	} while (next_permutation(begin(c), end(c)));
	cout << ans % 998 << endl;
}