Codeforces Round 504 (rated, Div. 1 + Div. 2, based on VK Cup 2018 Final)
D
Array Restoration
Codeforces
1700
原题
← CE →
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Initially there was an array $a$ consisting of $n$ integers. Positions in it are numbered from $1$ to $n$.

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Exactly $q$ queries were performed on the array. During the $i$-th query some segment $(l_i, r_i)$ $(1 \le l_i \le r_i \le n)$ was selected and values of elements on positions from $l_i$ to $r_i$ inclusive got changed to $i$. The order of the queries couldn't be changed and all $q$ queries were applied. It is also known that every position from $1$ to $n$ got covered by at least one segment.

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We could have offered you the problem about checking if some given array (consisting of $n$ integers with values from $1$ to $q$) can be obtained by the aforementioned queries. However, we decided that it will come too easy for you.

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So the enhancement we introduced to it is the following. Some set of positions (possibly empty) in this array is selected and values of elements on these positions are set to $0$.

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Your task is to check if this array can be obtained by the aforementioned queries. Also if it can be obtained then restore this array.

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If there are multiple possible arrays then print any of them.

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Input

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The first line contains two integers $n$ and $q$ ($1 \le n, q \le 2 \cdot 10^5$) — the number of elements of the array and the number of queries perfomed on it.

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The second line contains $n$ integer numbers $a_1, a_2, \dots, a_n$ ($0 \le a_i \le q$) — the resulting array. If element at some position $j$ is equal to $0$ then the value of element at this position can be any integer from $1$ to $q$.

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Output

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Print "YES" if the array $a$ can be obtained by performing $q$ queries. Segments $(l_i, r_i)$ $(1 \le l_i \le r_i \le n)$ are chosen separately for each query. Every position from $1$ to $n$ should be covered by at least one segment.

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Otherwise print "NO".

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If some array can be obtained then print $n$ integers on the second line — the $i$-th number should be equal to the $i$-th element of the resulting array and should have value from $1$ to $q$. This array should be obtainable by performing exactly $q$ queries.

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If there are multiple possible arrays then print any of them.

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Note

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In the first example you can also replace $0$ with $1$ but not with $3$.

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In the second example it doesn't really matter what segments to choose until query $10$ when the segment is $(1, 3)$.

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The third example showcases the fact that the order of queries can't be changed, you can't firstly set $(1, 3)$ to $6$ and after that change $(2, 2)$ to $5$. The segment of $5$ should be applied before segment of $6$.

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There is a lot of correct resulting arrays for the fourth example.

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样例

Input #1
4 3
1 0 2 3
Output #1
YES
1 2 2 3
InputCopy OutputCopy
Input #2
3 10
10 10 10
Output #2
YES
10 10 10
InputCopy OutputCopy
Input #3
5 6
6 5 6 2 2
Output #3
NO
InputCopy OutputCopy
Input #4
3 5
0 0 0
Output #4
YES
5 4 2
InputCopy OutputCopy
题目信息
题号
1023D
时间限制
1 s
内存限制
256 MB
标签
构造
数据结构

题面与样例版权归 Codeforces 及出题人所有;中文翻译由 AI 生成(CI 管线),如有出入请以原文为准。