description: You are given an array a consisting of n distinct elements and an integer k. Each element in the array is a non-negative integer not exceeding 2^k-1.
  
  Let's define the XOR distance for a number x as the value of 
  
  $$$f(x) = min_{i = 1}^{n} min_{j = i + 1}^{n} |(a_i ⊕ x) - (a_j ⊕ x)|,$$$
  
  where ⊕ denotes [the bitwise XOR operation](https://en.wikipedia.org/wiki/Bitwise_operation#XOR).
  
  For every integer x from 0 to 2^k-1, you have to calculate f(x).
  
  Input
  
  The first line contains two integers n and k (1 ≤ k ≤ 19; 2 ≤ n ≤ 2^k).
  
  The second line contains n integers a_1, a_2, ..., a_n (0 ≤ a_i ≤ 2^k-1). All these integers are distinct.
  
  Output
  
  Print 2^k integers. The i-th of them should be equal to f(i-1).
  
  Examples
  
  Input
  
  
  3 3
  6 0 3
  
  
  Output
  
  
  3 1 1 2 2 1 1 3 
  
  
  Input
  
  
  3 4
  13 4 2
  
  
  Output
  
  
  2 2 6 6 3 1 2 2 2 2 1 3 6 6 2 2 
  
  Note
  
  Consider the first example:
  
    * for x = 0, if we apply bitwise XOR to the elements of the array with x, we get the array [6, 0, 3], and the minimum absolute difference of two elements is 3; 
    * for x = 1, if we apply bitwise XOR to the elements of the array with x, we get the array [7, 1, 2], and the minimum absolute difference of two elements is 1; 
    * for x = 2, if we apply bitwise XOR to the elements of the array with x, we get the array [4, 2, 1], and the minimum absolute difference of two elements is 1; 
    * for x = 3, if we apply bitwise XOR to the elements of the array with x, we get the array [5, 3, 0], and the minimum absolute difference of two elements is 2; 
    * for x = 4, if we apply bitwise XOR to the elements of the array with x, we get the array [2, 4, 7], and the minimum absolute difference of two elements is 2; 
    * for x = 5, if we apply bitwise XOR to the elements of the array with x, we get the array [3, 5, 6], and the minimum absolute difference of two elements is 1; 
    * for x = 6, if we apply bitwise XOR to the elements of the array with x, we get the array [0, 6, 5], and the minimum absolute difference of two elements is 1; 
    * for x = 7, if we apply bitwise XOR to the elements of the array with x, we get the array [1, 7, 4], and the minimum absolute difference of two elements is 3. 
solution: #include <bits/stdc++.h>
  #pragma GCC optimize "Ofast"
  using namespace std;
  const int INF = 1e9 + 7;
  const int mod = 31607;
  const int N = 1e6 + 7;
  struct przedz {
    int lewy = INF;
    int prawy = -INF;
    int mini = INF;
    int id_lewy = -1;
    int id_prawy = -1;
    int id = -1;
    int dl = 1;
  };
  przedz merge(przedz lewy, przedz prawy) {
    przedz ret;
    ret.lewy = min(lewy.lewy, lewy.dl + prawy.lewy);
    ret.prawy = max(lewy.prawy, lewy.dl + prawy.prawy);
    ret.mini = min({lewy.mini, prawy.mini, lewy.dl + prawy.lewy - lewy.prawy});
    ret.dl = lewy.dl * 2;
    ret.id_lewy = lewy.id;
    ret.id_prawy = prawy.id;
    ret.id = lewy.id / 2;
    return ret;
  }
  vector<przedz> tree;
  int T, n, k;
  int gray(int x) { return x ^ (x >> 1); }
  int rev(int x) {
    int ret = 0;
    for (int i = 0; i < k; i++)
      if (x & (1 << i)) ret |= (1 << (k - 1 - i));
    return ret;
  }
  void solve() {
    cin >> n >> k;
    T = (1 << k);
    tree.resize(T + T);
    vector<int> ans(T);
    vector<int> mam(T);
    vector<int> tab(n);
    for (int i = 0; i < n; i++) {
      cin >> tab[i];
      mam[tab[i]] = true;
    }
    for (int i = 0; i < T; i++) {
      tree[T + i].id = T + i;
      if (mam[i]) {
        tree[T + i].lewy = 0;
        tree[T + i].prawy = 0;
      }
    }
    for (int i = T - 1; i >= 1; i--)
      tree[i] = merge(tree[i * 2], tree[i * 2 + 1]);
    ans[0] = tree[1].mini;
    for (int i = 1; i < T; i++) {
      int bit = gray(i) ^ gray(i - 1);
      for (int j = bit; j < bit * 2; j++) swap(tree[j].id_lewy, tree[j].id_prawy);
      for (int j = bit * 2 - 1; j >= 1; j--) {
        tree[j] = merge(tree[tree[j].id_lewy], tree[tree[j].id_prawy]);
      }
      ans[rev(gray(i))] = tree[1].mini;
    }
    for (auto& u : ans) cout << u << ' ';
    cout << '\n';
  }
  signed main() {
    ios::sync_with_stdio(0);
    cin.tie(0);
    int test = 1;
    for (int i = 0; i < test; i++) solve();
  }
  