// iostream is too mainstream
#include <cstdio>
// bitch please
#include <iostream>
#include <algorithm>
#include <cstdlib>
#include <vector>
#include <set>
#include <map>
#include <queue>
#include <stack>
#include <list>
#include <cmath>
#include <iomanip>
#define dibs reserve
#define OVER9000 1234567890
#define ALL_THE(CAKE,LIE) for(auto LIE =CAKE.begin(); LIE != CAKE.end(); LIE++)
#define tisic 47
#define soclose 1e-8
#define chocolate win
// so much chocolate
#define patkan 9
#define ff first
#define ss second
#define abs(x) ((x < 0)?-(x):x)
#define uint unsigned int
#define dbl long double
using namespace std;
// mylittledoge

int main() {
	cin.sync_with_stdio(0);
	cin.tie(0);
	int N;
	long long S;
	cin >> N >> S;
	vector<int> A(N,0);
	for(int i =1; i < N; i++) {
		if(S >= 0) A[i] =1, S -=N-i;
		else A[i] =-1, S +=N-i;}
	if(S != 0) {cout << "-1\n"; return 0;}
	for(int i =1; i < N; i++) A[i] +=A[i-1];
	for(int i =0; i < N; i++) cout << A[i] << ((i == N-1)?"\n":" ");
	return 0;}

// look at my code
// my code is amazing