#pragma GCC optimize ("O2")
#pragma GCC target ("avx")
#include<bits/stdc++.h>
//#include<atcoder/all>
//using namespace atcoder;

using namespace std;
typedef long long ll;
#define rep(i, n) for(int i = 0; i < (n); i++)
#define rep1(i, n) for(int i = 1; i <= (n); i++)
#define co(x) cout << (x) << "\n"
#define cosp(x) cout << (x) << " "
#define ce(x) cerr << (x) << "\n"
#define cesp(x) cerr << (x) << " "
#define pb push_back
#define mp make_pair
#define chmin(x, y) x = min(x, y)
#define chmax(x, y) x = max(x, y)
#define Would
#define you
#define please



char dp[310][90100];
int main() {
	cin.tie(0);
	ios::sync_with_stdio(false);


	int N, M;
	cin >> N >> M;
	int T[301][301];
	int kazu[301] = {};
	int kei = 0;
	rep1(i, N) rep1(j, N) {
		int tmp = i * j;
		int cnt = 0;
		rep(k, 30) cnt += (tmp >> k & 1);
		T[i][j] = (cnt % 2 == 0);
		kazu[i] += T[i][j];
		kei += T[i][j];
		kazu[i] += T[i][j];
	}

	dp[0][0] = 1;
	rep(i, N) rep(j, 90000) if (dp[i][j] != 0) {
		dp[i + 1][j + kazu[i + 1]] = -(i + 1);
		dp[i + 1][j] = 1;
	}

	int erabu[310] = {}, k = 0;
	if (kei - M >= 0) {
		if (dp[N][kei - M]) {
			int tmp = kei - M;
			for (int i = N; i > 0; i--) {
				if (dp[i][tmp] < 0) {
					erabu[i] = 1;
					k++;
					tmp -= kazu[-dp[i][tmp]];
				}
			}
			cosp(N - k);
			co(k);
			rep1(i, N) if (!erabu[i]) {
				k++;
				if (k < N) cout << i << " ";
				else cout << i << "\n";
			}
			rep1(i, N) if (erabu[i]) {
				cout << i << " ";
			}
			return 0;
		}
	}
	if (kei + M <= 90000) {
		if (dp[N][kei + M]) {
			int tmp = kei + M;
			for (int i = N; i > 0; i--) {
				if (dp[i][tmp] < 0) {
					erabu[i] = 1;
					k++;
					tmp -= kazu[-dp[i][tmp]];
				}
			}
			cosp(k);
			co(N - k);
			rep1(i, N) if (erabu[i]) {
				k--;
				if (k) cout << i << " ";
				else cout << i << "\n";
			}
			rep1(i, N) if (!erabu[i]) {
				cout << i << " ";
			}
			return 0;
		}
	}
	co(-1);
	return 0;

	Would you please return 0;
}