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

#define rep(i, n) for( ll i = 0; i < n; i++ )
using ll = long long;

int main() {
	int N, K;
	cin >> N >> K;
	vector<ll> a( N );
	rep(i, N) cin >> a[i];
	int l = 1 << N;
	ll MOD = 998, MOD1 = 998244353, ans = 0;
	rep(mask, l) {
		int b = __builtin_popcount( mask );
		if( b != K ) continue;
		ll s = 0;
		rep(i, N) {
			if(mask >> i & 1) s += a[i];
		}
		if(s % MOD >= s % MOD1) ans++;
	}
	cout << ans % MOD << endl;
}