from copy import deepcopy

N,K,X,Y=map(int,input().split())
A=list(map(int,input().split()))
Mod=998244353

T=1023
Flag=set()
for a in A:
    Flag.add(a)

Z=[[0]*(T+1) for _ in range(T+1)]

DP=deepcopy(Z)

for a in range(T+1):
    if a in Flag:
        DP[a][a]=1

for _ in range(N-1):
    ODP,DP=DP,deepcopy(Z)

    S=[0]*(T+1)
    for k in range(T+1):
        E=ODP[k]
        for x in range(T+1):
            S[x]+=E[x]
            S[x]%=Mod

    for i in Flag:
        E=DP[i]
        F=ODP[i]
        for x in range(T+1):
            E[x]=S[x^i]-F[x^i]

B=0
for L in DP:
    B+=sum(L[X:Y+1])
    B%=Mod
print(B)