#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
constexpr int Inf = 1000000030;
constexpr ll INF= 2000000000000000000;
constexpr ll MOD = 1000000007;
const double PI = 3.1415926535897;
typedef pair<ll,ll> P;
typedef pair<ll,P> PP;

template<class T> inline bool chmax(T &a, T b) {
    if (a < b) {
        a = b;
        return 1;
    }
    return 0;
}

template<class T> inline bool chmin(T &a, T b) {
    if (a > b) {
        a = b;
        return 1;
    }
    return 0;
}

ll mod(ll val, ll M) {
    val = val % M;
    if(val < 0) {
        val += M;
    }
    return val;
}

template<typename T>
T RS(T N, T P, T M){
    if(P == 0) {
        return 1;
    }
    if(P < 0) {
        return 0;
    }
    if(P % 2 == 0){
        ll t = RS(N, P/2, M);
        if(M == -1) return t * t;
        return t * t % M;
    }
    if(M == -1) {
        return N * RS(N,P - 1,M);
    }
    return N * RS(N, P-1, M) % M;
}

int main() {
    int N;
    ll X,Y;
    cin >> N >> X >> Y;
    vector<vector<int>> vec(N,vector<int>(62));
    for(int i = 0;i < N;i++) {
        ll A;
        cin >> A;
        for(int j = 0;j < 62;j++) {
            vec.at(i).at(j) = A % 2;
            A /= 2;
        }
    }
    reverse(vec.begin(),vec.end());
    vector<int> now(62);
    for(int i = 0;i < 62;i++) {
        now.at(i) = Y % 2;
        Y /= 2;
    }
    bool ret = false;
    vector<int> ret2(N,1);
    for(int i = 0;i < N;i++) {
        bool cnt1 = false;
        bool cnt2 = false;
        for(int j = 0;j < 62;j++) {
            if(now.at(j) == 1 && vec.at(i).at(j) == 0) {
                cnt1 = true;
            }
            else if(now.at(j) == 0 && vec.at(i).at(j) == 1) {
                cnt2 = true;
            }
        }
        if(cnt1 && cnt2) {
            break;
        }
        else if(!(cnt1 || cnt2)) {
            ret = true;
            ret2.at(i) = 3;
            break;
        }
        else if(cnt1) {
            ret2.at(i) = 2;
            for(int j = 0;j < 62;j++) {
                if(now.at(j) == 1) {
                    if(vec.at(i).at(j) == 1) now.at(j) = 2;
                }
            }
        }
        else {
            ret2.at(i) = 1;
            for(int j = 0;j < 62;j++) {
                if(now.at(j) == 0) {
                    if(vec.at(i).at(j) == 0) now.at(j) = 2;
                }
            }
        }
    }
    if(!ret) cout << -1 << endl;
    else {
        reverse(ret2.begin(),ret2.end());
        for(int i = 0;i < N;i++) {
            cout << ret2.at(i) << " ";
        }
        cout << endl;
    }
}