#include <bits/stdc++.h>
#define ADD(a, b) a = (a + ll(b)) % mod
#define MUL(a, b) a = (a * ll(b)) % mod
#define MAX(a, b) a = max(a, b)
#define MIN(a, b) a = min(a, b)
#define rep(i, a, b) for(int i = int(a); i < int(b); i++)
#define rer(i, a, b) for(int i = int(a) - 1; i >= int(b); i--)
#define all(a) (a).begin(), (a).end()
#define sz(v) (int)(v).size()
#define pb push_back
#define sec second
#define fst first
#define debug(fmt, ...) Debug(__LINE__, ":", fmt, ##__VA_ARGS__)
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef pair<int, int> pi;
typedef pair<ll, ll> pl;
typedef pair<int, pi> ppi;
typedef vector<int> vi;
typedef vector<ll> vl;
typedef vector<vl> mat;
typedef complex<double> comp;
void Debug() {cerr << '\n'; }
template<class FIRST, class... REST>void Debug(FIRST arg, REST... rest){
	cerr<<arg<<" ";Debug(rest...);}
template<class T>ostream& operator<<(ostream& out,const vector<T>& v) {
	out<<"[";if(!v.empty()){rep(i,0,sz(v)-1)out<<v[i]<<", ";out<<v.back();}out<<"]";return out;}
template<class S, class T>ostream& operator<<(ostream& out,const pair<S, T>& v){
	out<<"("<<v.first<<", "<<v.second<<")";return out;}
const int MAX_N = 500010;
const int MAX_V = 100010;
const double eps = 1e-6;
const ll mod = 1000000007;
const int inf = (1 << 30) - 1;
const ll linf = 1LL << 60;
const double PI = 3.14159265358979323846;
mt19937 rng; //use it by rng() % mod, shuffle(all(vec), rng)
///////////////////////////////////////////////////////////////////////////////////////////////////

ll C[2010][2010];

void C_init(int n) {
	n++;
	rep(i, 0, n) C[i][0] = 1;
	rep(i, 1, n) {
		rep(j, 1, i + 1) {
			C[i][j] = C[i - 1][j] + C[i - 1][j - 1];
		}
	}
}

vector<ll> moebius(vector<ll> f) { //inverse of the first zeta
	int n = sz(f);
	for(int i = 0; (1 << i) < n; i++) {
		rep(j, 0, n) if(!(j & (1 << i))) f[j] -= f[j | (1 << i)];
	}
	return f;
}

int N, K, S, T;
int A[110];

ll dp[(1 << 18)];
const int L = 18;

void solve() {
	C_init(51);
	cin >> N >> K >> T >> S; //S-> or, T-> and
	if((S & T) != T) {
		cout << 0 << "\n"; return;
	}
	int M = 0;
	rep(i, 0, N) {
		int a; cin >> a;
		if(((T & a) == T) && (S & a) == a) A[M++] = a;
	}
	N = M;
	rep(bit, 0, (1 << L)) { //(1が立っているところが0)
		rep(i, 0, N) {
			int cnt = 0;
			rep(j, i + 1, N) {
				if((A[i] & bit) == (A[j] & bit)) cnt++;
			}
			rep(j, 0, min(cnt, K - 1) + 1) {
				dp[bit] += C[cnt][j];
			}
		}
	}
	// int rans = 0;
	// rep(i, 1, (1 << N)) {
	// 	int s = 0, t = (1 << L) - 1;
	// 	if(__builtin_popcount(i) > K) continue;
	// 	rep(j, 0, N) {
	// 		if(!(i & (1 << j))) continue;
	// 		s |= A[j];
	// 		t &= A[j];
	// 	}
	// 	if(s == S && t == T) rans++;
	// }
	// debug(rans);
	auto ans = moebius(vl(dp, dp + (1 << L)));
	cout << abs(ans[((1 << L) - 1 - S) | T]) << "\n";
}

uint32_t rd() {
	uint32_t res;
#ifdef __MINGW32__
	asm volatile("rdrand %0" :"=a"(res) ::"cc");
#else
	res = std::random_device()();
#endif
	return res;
}

int main() {
#ifndef LOCAL
	ios::sync_with_stdio(false);
    cin.tie(0);
#endif
    cout << fixed;
	cout.precision(20);
    cerr << fixed;
	cerr.precision(6);
	rng.seed(rd());
#ifdef LOCAL
	//freopen("in.txt", "wt", stdout); //for tester
	if(!freopen("in.txt", "rt", stdin)) return 1;
#endif	
	solve();
    cerr << "Time: " << 1.0 * clock() / CLOCKS_PER_SEC << " s.\n";
	return 0;
}




Measured memory_bytes: 7472