#pragma GCC optimize ("O2") #pragma GCC target ("avx2") #include using namespace std; typedef long long ll; #define rep(i, n) for(int i = 0; i < (n); i++) #define rep1(i, n) for(int i = 1; i <= (n); i++) #define co(x) cout << (x) << "\n" #define cosp(x) cout << (x) << " " #define ce(x) cerr << (x) << "\n" #define cesp(x) cerr << (x) << " " #define pb push_back #define mp make_pair #define chmin(x, y) x = min(x, y) #define chmax(x, y) x = max(x, y) #define Would #define you #define please const int mod = 998244353; int main() { cin.tie(0); ios::sync_with_stdio(false); int N, K; cin >> N >> K; int A[200000]; rep(i, N) cin >> A[i]; ll dp[1024][11] = {}; dp[0][0] = 1; rep(i, N) { for (int j = 1023; j >= 0; j--) { if (A[i] + j != (A[i] ^ j)) continue; for (int k = 9; k >= 0; k--) { (dp[j + A[i]][k + 1] += dp[j][k]) %= mod; } } } if (K > 10) { co(0); return 0; } ll kotae = 0; rep(j, 1024) { kotae += dp[j][K]; } co(kotae % mod); Would you please return 0; }