#include<bits/stdc++.h>
using namespace std;
using LL=long long;
using ULL=unsigned long long;
#define rep(i,n) for(int i=0;i<(n);i++)

const LL M=998244353;
const int Z=1024;
int N,K,X,Y;
int A[Z]={};
LL dp[Z][Z];
LL buf[Z][Z];

int main(){
  cin>>N>>K>>X>>Y;
  rep(i,K){ int a; cin>>a; A[a]=dp[a][a]=1; }
  rep(i,N-1){
    rep(x,Z){
      LL S=0; rep(y,Z) S+=dp[x][y];
      rep(y,Z){
        if(!A[y]) continue;
        buf[x^y][y] = S-dp[x][y];
      }
    }
    rep(x,Z) rep(y,Z){ dp[x][y]=buf[x][y]; buf[x][y]=0; }
  }

  LL ans=0;
  rep(x,Z) rep(y,Z) if(X<=x && x<=Y) ans+=dp[x][y];
  ans%=M;
  cout<<ans<<endl;

  return 0;
}