#include #include using namespace std; #define DEBUG(x) cerr<<#x<<": "< #define vl vector #define vii vector< vector > #define vll vector< vector > #define vs vector #define pii pair #define pis pair #define psi pair #define pll pair template pair operator+(const pair &s, const pair &t) { return pair(s.first + t.first, s.second + t.second); } template pair operator-(const pair &s, const pair &t) { return pair(s.first - t.first, s.second - t.second); } template ostream& operator<<(ostream& os, pair p) { os << "(" << p.first << ", " << p.second << ")"; return os; } #define X first #define Y second #define rep(i,n) for(int i=0;i<(n);i++) #define rep1(i,n) for(int i=1;i<=(n);i++) #define rrep(i,n) for(int i=(n)-1;i>=0;i--) #define rrep1(i,n) for(int i=(n);i>0;i--) #define REP(i,a,b) for(int i=a;i bool chmax(T &a, const T &b) { if (a bool chmin(T &a, const T &b) { if (a>b) { a = b; return 1; } return 0; } #define UNIQUE(v) v.erase(std::unique(v.begin(), v.end()), v.end()); const ll inf = 1000000001; const ll INF = (ll)1e18 + 1; const ll MOD = 1000000007; //const ll MOD = 998244353; const double pi = 3.14159265358979323846; #define Sp(p) cout<operator()(0, x); } // [x, y)の一様乱数 ll operator()(ll x, ll y) { uniform_int_distribution dist(x, y - 1); return dist(mt); } } rnd; int main() { int n, x; cin >> n >> x; int ma = 100005; if (n <= 12) { while (true) { vi res; ll now = 0; rep (i, n - 1) { res.push_back(rnd(1, ma + 1)); now ^= res.back(); } res.push_back(now ^ x); sort(all(res)); if (res.back() > ma) continue; UNIQUE(res); if (res.size() < n) continue; rep (i, n) { cout << res[i] << endl; } return 0; } } set st; int now = 0; rep1 (i, n - 10) { st.insert(i); now ^= i; } while (true) { vi res; int now2 = now; rep (i, 10 - 1) { res.push_back(rnd(n - 10 + 1, ma + 1)); now2 ^= res.back(); } res.push_back(now2 ^ x); if (st.count(res.back())) continue; sort(all(res)); if (res.back() > ma) continue; UNIQUE(res); if (res.size() < 10) continue; rep1 (i, n - 10) cout << i << endl; rep (i, res.size()) { cout << i << endl; } return 0; } }