import sys

def func1(sum, num):
    if sum > 0 & num > 0 & int(sum) == sum & int(num) == num:
        beg = (sum * 2 / num - num + 1) / 2
        if beg % 1 == 0 & beg != 0:
            return [i for i in range(int(beg), int(beg) + num)]
        else:
            return -1
    else:
        return -1

for line in sys.stdin:
    a = line.split()
    if len(a) != 2:
        print(-1)
    sum, num = a[0], a[1]
    if type(int(sum)) == type(int(num)) == type(1):
        print(func1(int(sum), int(num)))
    else:
        print(-1)