// 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
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