n,h=map(int,input().split())
D=[]
for i in range(1,n):
    if n%i==0:
        D.append(i)

if h==1:
    P=[]
    for num in D:
        P.extend([num]*num)
    print(*P)

elif h==2:
    P=[]
    for num in D[:-1]:
        P.extend([num]*num)
    print(*P)
    print(*[D[-1]]*D[-1])

elif h==n//2:
    P=[]
    for num in D[:-1]:
        P.extend([num]*num)
    for num in P:
        print(num,D[-1])

elif h==n:
    P=[]
    for num in D:
        P.extend([num]*num)
    for num in P:
        print(num)

else:
    print(-1)