#include <bits/stdc++.h>
//#include <boost/multiprecision/cpp_int.hpp>
#pragma GCC target("avx")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
//namespace mp = boost::multiprecision;
//using Bll = mp::cpp_int;
using namespace std;
#define ll long long
#define rep(i, m, n) for (ll i = m; i < n; i++)
#define rrep(i, m, n) for (ll i = m - 1; i >= n; i--)
#define pb(n) push_back(n)
#define UE(N) N.erase(unique(N.begin(), N.end()), N.end());
#define Sort(n) sort(n.begin(), n.end())
#define Rev(n) reverse(n.begin(), n.end())
#define HpOut(S) cout << setprecision(50) << S << endl
#define Vec(K, L, N, S) vector<L> K(N, S)
#define DV(K, L, N, M, S) vector<vector<L>> K(N, vector<L>(M, S))
#define TV(K, L, N, M, R, S) \
    vector<vector<vector<L>>> K(N, vector<vector<L>>(M, vector<L>(R, S)))
#define pint pair<ll, ll>
#define tint tuple<int, int, int>
#define paf(L, R) pair<L, R>
#define mod 998244353
#define MAX 10010
#define ALL(a) a.begin(), a.end()
#define chmax(a, b) a = (((a) < (b)) ? (b) : (a))
#define chmin(a, b) a = (((a) > (b)) ? (b) : (a))

int main(){
	cin.tie(nullptr);
	ios::sync_with_stdio(false);
	ll N, K, X, Y; 
    cin >> N >> K >> X >> Y;
	vector<vector<ll>> dp(N + 2, vector<ll>(1024, 0));
    vector<ll> A(K);
    rep(i, 0, K) cin >> A[i];
    Sort(A);
    UE(A);
    K = A.size();
	dp[0][0] = 1;
	rep(i, 0, N) {
		rep(j, 0, 1024) {
			rep(k, 0, K) dp[i + 1][j ^ A[k]] = (dp[i + 1][j ^ A[k]] + dp[i][j]) % mod;		
			if(!i) dp[i + 2][j] = (dp[i + 2][j] - dp[i][j] * K + mod) % mod; 
			else dp[i + 2][j] = (dp[i + 2][j] - dp[i][j] * (K - 1) + mod) % mod;
		}
	}
	ll res=0;
	rep(i, 0, 1024) if(X <= i & i <= Y) res = res + dp[N][i];
	cout << res % mod << endl;
}