#define _USE_MATH_DEFINES
#include <bits/stdc++.h>
using namespace std;
#define FOR(i,m,n) for(int i=(m);i<(n);++i)
#define REP(i,n) FOR(i,0,n)
#define ALL(v) (v).begin(),(v).end()
using ll = long long;
constexpr int INF = 0x3f3f3f3f;
constexpr long long LINF = 0x3f3f3f3f3f3f3f3fLL;
constexpr double EPS = 1e-8;
constexpr int MOD = 1000000007;
// constexpr int MOD = 998244353;
constexpr int dy[] = {1, 0, -1, 0}, dx[] = {0, -1, 0, 1};
constexpr int dy8[] = {1, 1, 0, -1, -1, -1, 0, 1}, dx8[] = {0, -1, -1, -1, 0, 1, 1, 1};
template <typename T, typename U> inline bool chmax(T &a, U b) { return a < b ? (a = b, true) : false; }
template <typename T, typename U> inline bool chmin(T &a, U b) { return a > b ? (a = b, true) : false; }
struct IOSetup {
  IOSetup() {
    std::cin.tie(nullptr);
    std::ios_base::sync_with_stdio(false);
    std::cout << fixed << setprecision(20);
  }
} iosetup;

int main() {
  constexpr int B = 60;
  int n; ll x, y; cin >> n >> x >> y;
  vector<ll> a(n); REP(i, n) cin >> a[i];
  vector<pair<vector<int>, vector<int>>> que;
  {
    vector<int> bit(B), ans(n, 3);
    REP(i, B) bit[i] = y >> i & 1;
    que.emplace_back(bit, ans);
  }
  for (int i = n - 1; i >= 0; --i) {
    if (que.empty()) {
      cout << "-1\n";
      return 0;
    }
    vector<pair<vector<int>, vector<int>>> nx;
    for (auto [bit, ans] : que) {
      bool sw = true;
      REP(b, B) sw &= bit[b] == -1 || bit[b] == (a[i] >> b & 1);
      if (sw) {
        REP(i, n) cout << ans[i] << " \n"[i + 1 == n];
        return 0;
      }
      bool an = false, o = false;
      REP(b, B) {
        if ((a[i] >> b & 1) && bit[b] == 0) an = true;
        if (!(a[i] >> b & 1) && bit[b] == 1) o = true;
      }
      if (an && o) continue;
      if (an) {
        REP(b, B) {
          if (!(a[i] >> b & 1) && bit[b] == 0) bit[b] = -1;
        }
        ans[i] = 1;
        nx.emplace_back(bit, ans);
      } else if (o) {
        REP(b, B) {
          if ((a[i] >> b & 1) && bit[b] == 1) bit[b] = -1;
        }
        ans[i] = 2;
        nx.emplace_back(bit, ans);
      } else {
        {
          vector<int> nx_bit = bit, nx_ans = ans;
          REP(b, B) {
            if (!(a[i] >> b & 1) && nx_bit[b] == 0) nx_bit[b] = -1;
          }
          nx_ans[i] = 1;
          nx.emplace_back(nx_bit, nx_ans);
        }
        {
          vector<int> nx_bit = bit, nx_ans = ans;
          REP(b, B) {
            if ((a[i] >> b & 1) && bit[b] == 1) bit[b] = -1;
          }
          nx_ans[i] = 2;
          nx.emplace_back(nx_bit, nx_ans);
        }
      }
    }
    que.swap(nx);
  }
  for (auto [bit, ans] : que) {
    bool sw = true;
    REP(b, B) sw &= bit[b] == -1 || bit[b] == (x >> b & 1);
    if (sw) {
      REP(i, n) cout << ans[i] << " \n"[i + 1 == n];
      return 0;
    }
  }
  cout << "-1\n";
  return 0;
}