N,K,X,Y=map(int,input().split())
A=list(map(int,input().split()))

mod=998244353
S=set(A)
LEN=len(S)

DP=[[0]*1024 for i in range(N+1)]
DP[0][0]=1

for i in range(1,N+1):
    for j in range(1024):
        for s in S:
            DP[i][j^s]+=DP[i-1][j]
            DP[i][j^s]%=mod

        DP[i][j]-=DP[i-2][j]*LEN
        DP[i][j]+=DP[i-2][j]
    DP[2][0]=0

ANS=0
for i in range(X,min(Y+1,1024)):
    ANS=(ANS+DP[N][i])%mod

print(ANS)