import sys
input = sys.stdin.readline

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

initY=Y

P=[]

Y=list(map(int,list(bin(Y)[2:].zfill(64)[::-1])))


for i in range(N-1,-1,-1):
    #print(i,Y)
    S=0
    T=0
    for j in range(64):
        if (1<<j) & A[i]!=0 and Y[j] == 0:
            S=1
        if (1<<j) & A[i]==0 and Y[j] == 1:
            T=1

    if S==0 and T==0:
        P.append(3)
        P+=[1]*(N-len(P))
        print(*P[::-1])
        exit()
    elif S==1 and T==1:
        print(-1)
        exit()
    elif S==1:
        P.append(1)
        for j in range(64):
            if Y[j]==0:
                if (1<<j) & A[i]!=0:
                    True
                else:
                    Y[j]=-1
    else:
        P.append(2)
        for j in range(64):
            if Y[j]==1:
                if (1<<j) & A[i]==0:
                    True
                else:
                    Y[j]=-1

P=P[::-1]
for i in range(N):
    if P[i]==1:
        X&=A[i]
    elif P[i]==2:
        X|=A[i]
    else:
        X=A[i]

if X==initY:
    print(*P)
else:
    print(-1)