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 6
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 220
 108
 6
 334
 280
 20
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 60
 10
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 58
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 230
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 86

import java.io.*;
import java.lang.*;
import java.util.*;
import java.math.*;

public class code
{
	static class FastReader 
    { 
        BufferedReader br; 
        StringTokenizer st; 
  
        public FastReader() 
        { 
            br = new BufferedReader(new
                     InputStreamReader(System.in)); 
        } 
  
        String next() 
        { 
            while (st == null || !st.hasMoreElements()) 
            { 
                try
                { 
                    st = new StringTokenizer(br.readLine()); 
                } 
                catch (IOException  e) 
                { 
                    e.printStackTrace(); 
                } 
            } 
            return st.nextToken(); 
        } 
  
        int nextInt() 
        { 
            return Integer.parseInt(next()); 
        } 
  
        long nextLong() 
        { 
            return Long.parseLong(next()); 
        } 
  
        double nextDouble() 
        { 
            return Double.parseDouble(next()); 
        } 
  
        String nextLine() 
        { 
            String str = ""; 
            try
            { 
                str = br.readLine(); 
            } 
            catch (IOException e) 
            { 
                e.printStackTrace(); 
            } 
            return str; 
        } 
    } 

    public static void main(String args[])throws IOException
	{
        FastReader scn = new FastReader();
        
        String input = scn.nextLine();
        int k_ = scn.nextInt();
        int n = input.length();

        int minimum = Math.min(2*k_, ((n + k_)/2)*2);
        int ans = minimum;

        StringBuilder input_2 = new StringBuilder();
        input_2.append(input);
        for(int i = 0; i < k_; i++)
            input_2.append('.');
        input = input_2.toString();

        for(int l = minimum + 2; l <= n + k_; l = l + 2)
        {
            for(int i = 0; i <= n + k_ - l; i++)
            {
                int j = i;
                int k = l/2 + j;

                int i2;
                for(i2 = 0; i2 < (l/2); i2++)
                {
                    char x = input.charAt(j + i2);
                    char y = input.charAt(k + i2);

                    if(x == '.' || y == '.')
                    {

                    }
                    else if( x == y)
                    {

                    }
                    else
                    {
                        break;
                    }
                }

                if(i2 >= (l/2))
                {
                    ans = l;
                    break;
                }
            }
        }
        System.out.println(ans);
	}
}


class Node implements Comparable<Node>
{
    int index;
    int degree;
    int xor_value;

    public Node(int index, int degree, int xor_value)
    {
        this.index = index;
        this.degree = degree;
        this.xor_value = xor_value;
    }

    public int compareTo(Node n)
    {
        if(this.degree < n.degree)
            return -1;
        else if(this.degree == n.degree)
            return 0;
        else return 1;
    }
}