import functools

def main():
    N, M = map(int, input().split())

    if M == 1:
        print(N)
        return
    if N == M:
        print(*list(range(1, N + 1)), sep=' ')
        return

    ans = list(range(1, M))
    x = functools.reduce(lambda x, y: x ^ y, ans)
    ans.append(~x & (2 ** (len(f'{N:b}') - 1)))
    print(*ans, sep=' ')

main()