CF BUDDY
← Problems·

916B · Jamie and Binary Sequence (changed after round)

2000 · bitmasks, greedy, math

Problem: Jamie is preparing a Codeforces round. He has got an idea for a problem, but does not know how to solve it. Help him write a solution to the following problem:

Find k integers such that the sum of two to the power of each number equals to the number n and the largest integer in the answer is as small as possible. As there may be multiple answers, you are asked to output the lexicographically largest one.

To be more clear, consider all integer sequence with length k (a1, a2, ..., ak) with i=1k2ai=n\sum_{i=1}^{k} 2^{a_i} = n. Give a value y=max1ikaiy = \max_{1 \leq i \leq k} a_i to each sequence. Among all sequence(s) that have the minimum y value, output the one that is the lexicographically largest.

For definitions of powers and lexicographical order see notes.

Input Format: The first line consists of two integers n and k (1 ≤ n ≤ 1018, 1 ≤ k ≤ 105) — the required sum and the length of the sequence.

Output Format: Output "No" (without quotes) in a single line if there does not exist such sequence. Otherwise, output "Yes" (without quotes) in the first line, and k numbers separated by space in the second line — the required sequence.

It is guaranteed that the integers in the answer sequence fit the range [ - 1018, 1018].

Note: Sample 1:

23 + 23 + 22 + 21 + 20 = 8 + 8 + 4 + 2 + 1 = 23

Answers like (3, 3, 2, 0, 1) or (0, 1, 2, 3, 3) are not lexicographically largest.

Answers like (4, 1, 1, 1, 0) do not have the minimum y value.

Sample 2:

It can be shown there does not exist a sequence with length 2.

Sample 3:

21+21=12+12=12^{-1} + 2^{-1} = \frac{1}{2} + \frac{1}{2} = 1

Powers of 2:

If x > 0, then 2x = 2·2·2·...·2 (x times).

If x = 0, then 2x = 1.

If x < 0, then 2x=12x2^x = \frac{1}{2^{-x}}.

Lexicographical order:

Given two different sequences of the same length, (a1, a2, ... , ak) and (b1, b2, ... , bk), the first one is smaller than the second one for the lexicographical order, if and only if ai < bi, for the first i where ai and bi differ.

Sample Cases

Case 1

Input

23 5

Output

Yes
3 3 2 1 0

Case 2

Input

13 2

Output

No

Case 3

Input

1 2

Output

Yes
-1 -1

Similar problems

00:00:00
Loading editor…
Welcome! I'm your coding tutor for this problem. Use the chips below to reveal stored hints or get AI feedback on your code. I'll guide you step by step — never giving away the solution.

Sign in to unlock AI tutor feedback