There are n Christmas trees on an infinite number line. The i-th tree grows at the position x_i. All x_i are guaranteed to be distinct.

Each integer point can be either occupied by the Christmas tree, by the human or not occupied at all. Non-integer points cannot be occupied by anything.

There are m people who want to celebrate Christmas. Let y_1, y_2, ..., y_m be the positions of people (note that all values x_1, x_2, ..., x_n, y_1, y_2, ..., y_m should be distinct and all y_j should be integer). You want to find such an arrangement of people that the value ∑_{j=1}^{m}min_{i=1}^{n}|x_i - y_j| is the minimum possible (in other words, the sum of distances to the nearest Christmas tree for all people should be minimized).

In other words, let d_j be the distance from the j-th human to the nearest Christmas tree (d_j = min_{i=1}^{n} |y_j - x_i|). Then you need to choose such positions y_1, y_2, ..., y_m that ∑_{j=1}^{m} d_j is the minimum possible.

Input

The first line of the input contains two integers n and m (1 ≤ n, m ≤ 2 ⋅ 10^5) — the number of Christmas trees and the number of people.

The second line of the input contains n integers x_1, x_2, ..., x_n (-10^9 ≤ x_i ≤ 10^9), where x_i is the position of the i-th Christmas tree. It is guaranteed that all x_i are distinct.

Output

In the first line print one integer res — the minimum possible value of ∑_{j=1}^{m}min_{i=1}^{n}|x_i - y_j| (in other words, the sum of distances to the nearest Christmas tree for all people).

In the second line print m integers y_1, y_2, ..., y_m (-2 ⋅ 10^9 ≤ y_j ≤ 2 ⋅ 10^9), where y_j is the position of the j-th human. All y_j should be distinct and all values x_1, x_2, ..., x_n, y_1, y_2, ..., y_m should be distinct.

If there are multiple answers, print any of them.

Examples

Input


2 6
1 5


Output


8
-1 2 6 4 0 3 


Input


3 5
0 3 1


Output


7
5 -2 4 -1 2 
import java.io.*;
import java.util.*;
 
public class Main{
    
    public static void main(String[] args) throws IOException {
        Reader.init();
        int n=Reader.nextInt();
        int m=Reader.nextInt();
        HashSet<Integer> visited=new HashSet();
        Queue<Integer> Q=new LinkedList();
        for(int i=0;i<n;i++){
            int t=Reader.nextInt();
            visited.add(t);
            Q.add(t);
        }
        
        int res[]=new int[m];
        int i=0;
        long dis=0;
        int radius=1;
        while(i<m){
            Queue<Integer> temp=new LinkedList();
            while(i<m && !Q.isEmpty()){
                int pos=Q.poll();
                if(!visited.contains(pos+1)){
                    res[i++]=pos+1;
                    dis+=radius;
                    visited.add(pos+1);
                    temp.add(pos+1);
                }
                if(i<m && !visited.contains(pos-1)){
                    res[i++]=pos-1;
                    dis+=radius;
                    visited.add(pos-1);
                    temp.add(pos-1);
                }    
            }
            Q=temp;
            radius++;
        }
        println(dis);
        for(i=0;i<m;i++){
            print(res[i]+" ");
        }
    }
 
    static int mod=1000000007;
    public static void read(int arr[], int N) throws IOException{ for(int i=0;i<N;i++){ arr[i]=Reader.nextInt(); } }
    public static void read(long arr[], int N) throws IOException{ for(int i=0;i<N;i++){ arr[i]=Reader.nextLong(); } }
    public static void read(String arr[], int N) throws IOException{ for(int i=0;i<N;i++){ arr[i]=Reader.next(); } }
    public static void print(Object O){ System.out.print(O); }
    public static void println(Object O){ System.out.println(O); }
    public static void display(int arr[]){ System.out.println(Arrays.toString(arr)); }
    public static void display(int arr[][], int N){ for(int i=0;i<N;i++){ System.out.println(Arrays.toString(arr[i])); } }
}
 
class Node{
    int min;
    int max;
    Node(int a, int b){
        min=a;
        max=b;
    }
}
 
class Reader {
    static BufferedReader reader;
    static StringTokenizer tokenizer;
 
    static void init() {
        reader=new BufferedReader(new InputStreamReader(System.in));
        tokenizer=new StringTokenizer("");
    }
 
    static String next() throws IOException {
        while (!tokenizer.hasMoreTokens() ) {
            tokenizer=new StringTokenizer(reader.readLine());
        }
        return tokenizer.nextToken();
    }
 
    static int nextInt() throws IOException { return Integer.parseInt(next()); }
    static double nextDouble() throws IOException { return Double.parseDouble(next()); }
    static long nextLong() throws IOException { return Long.parseLong(next()); }
    static String nextLine() throws IOException { return reader.readLine(); }
}