Codeforces Round 468 (Div. 2, based on Technocup 2018 Final Round)
C
Laboratory Work
Codeforces
1700
原题
← BD →
翻译中…

Anya and Kirill are doing a physics laboratory work. In one of the tasks they have to measure some value $*n*$ times, and then compute the average value to lower the error.

翻译中…

Kirill has already made his measurements, and has got the following integer values: $*x*_{1}$, $*x*_{2}$, ..., $*x*_{*n*}$. It is important that the values are close to each other, namely, the difference between the maximum value and the minimum value is at most $2$.

翻译中…

Anya does not want to make the measurements, however, she can't just copy the values from Kirill's work, because the error of each measurement is a random value, and this coincidence will be noted by the teacher. Anya wants to write such integer values $*y*_{1}$, $*y*_{2}$, ..., $*y*_{*n*}$ in her work, that the following conditions are met:

翻译中…
  • the average value of $*x*_{1}, *x*_{2}, ..., *x*_{*n*}$ is equal to the average value of $*y*_{1}, *y*_{2}, ..., *y*_{*n*}$;
  • all Anya's measurements are in the same bounds as all Kirill's measurements, that is, the maximum value among Anya's values is not greater than the maximum value among Kirill's values, and the minimum value among Anya's values is not less than the minimum value among Kirill's values;
  • the number of equal measurements in Anya's work and Kirill's work is as small as possible among options with the previous conditions met. Formally, the teacher goes through all Anya's values one by one, if there is equal value in Kirill's work and it is not strike off yet, he strikes off this Anya's value and one of equal values in Kirill's work. The number of equal measurements is then the total number of strike off values in Anya's work.
翻译中…

Help Anya to write such a set of measurements that the conditions above are met.

翻译中…

Input

翻译中…

The first line contains a single integer $*n*$ ($1 ≤ *n* ≤ 100 000$) — the numeber of measurements made by Kirill.

翻译中…

The second line contains a sequence of integers $*x*_{1}, *x*_{2}, ..., *x*_{*n*}$ ($- 100 000 ≤ *x*_{*i*} ≤ 100 000$) — the measurements made by Kirill. It is guaranteed that the difference between the maximum and minimum values among values $*x*_{1}, *x*_{2}, ..., *x*_{*n*}$ does not exceed $2$.

翻译中…

Output

翻译中…

In the first line print the minimum possible number of equal measurements.

翻译中…

In the second line print $*n*$ integers $*y*_{1}, *y*_{2}, ..., *y*_{*n*}$ — the values Anya should write. You can print the integers in arbitrary order. Keep in mind that the minimum value among Anya's values should be not less that the minimum among Kirill's values, and the maximum among Anya's values should be not greater than the maximum among Kirill's values.

翻译中…

If there are multiple answers, print any of them.

翻译中…

Note

翻译中…

In the first example Anya can write zeros as here measurements results. The average value is then equal to the average value of Kirill's values, and there are only two equal measurements.

翻译中…

In the second example Anya should write two values $100$ and one value $101$ (in any order), because it is the only possibility to make the average be the equal to the average of Kirill's values. Thus, all three measurements are equal.

翻译中…

In the third example the number of equal measurements is $5$.

翻译中…

样例

Input #1
6
-1 1 1 0 0 -1
Output #1
2
0 0 0 0 0 0
InputCopy OutputCopy
Input #2
3
100 100 101
Output #2
3
101 100 100
InputCopy OutputCopy
Input #3
7
-10 -9 -10 -8 -10 -9 -9
Output #3
5
-10 -10 -9 -9 -9 -9 -9
InputCopy OutputCopy
题目信息
题号
931C
时间限制
1 s
内存限制
256 MB
标签
模拟
数学

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。