#yuki1915
import heapq
N, K = map(int, input().split())
if K <= N:
    print(K)
    exit()
if K > N*(N+1)//2:
    print(-1)
    exit()

ans = []
temp = K
for i in range(N, 0, -1):
    temp -= i
    ans = [i] + ans
    if temp < i -1:
        ans = [temp] + ans
        print(*ans)
        exit()