#include "iostream"
#define z(i,n)for(l i=0;i<n;i++)
using namespace std;using l=long long;const l N=1024,M=998244353;l A[N],d[42][N],n,k,m,x,y,a,r;main(){cin>>n>>m>>x>>y;z(i,m)cin>>a,k+=(A[a]?0:++A[a]);d[0][0]=1;z(i,n)z(j,N){z(l,N)d[i+1][j^l]+=A[l]*d[i][j];d[i+2][j]-=d[i][j]*(k-(i>0));}z(i,min(N,y+1))r+=(x<=i)*d[n][i];cout<<r%M;}