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3
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23

64
 200
 6
 246
 220
 108
 6
 334
 280
 20
 266
 60
 10
 142
 58
 120
 134
 172
 400
 186
 60
 230
 8
 190
 46
 74
 54
 400
 12
 2
 86

import java.io.*;
import java.util.*;
public class Main
{
    public static void main(String[] args) throws IOException
    {
        Reader in = new Reader();
        StringBuilder s = new StringBuilder();
        int k, max, cur, m ,n;
        
        //for (int i = 0; i < 11; i++) 
        {
            s = new StringBuilder().append(in.next().trim());
            k = in.nextInt();
            while(k-- > 0)
                s.append("?");
            max = 0;
            for (int j = 0; j < s.length(); ) {
                
                for (int l = 1; l < s.length(); l++) 
                {
                    cur = 0;
                    
                    for ( m = j+l, n = j; m < l*2 && m < s.length() && n <j+l; m++, n++) 
                    {
                        if(s.charAt(m) == s.charAt(n) || s.charAt(m) == '?' || s.charAt(n) == '?')
                            cur++;
                        else
                            break;
                        
                    }
                    if(j+l == n)
                    max = Math.max(max, cur);
                }
                s.deleteCharAt(0);
            }
            System.out.println(max*2);
            
        }
    }
    static class  Reader 
    {
        BufferedReader br;
        StringTokenizer st;
        Reader() { // To read from the standard input
            br = new BufferedReader(new InputStreamReader(System.in));
        }
        Reader(int i) throws IOException { // To read from a file
            br = new BufferedReader(new FileReader("Sample Input.txt"));
        }
       String next() throws IOException {
          while (st == null || !st.hasMoreTokens())
             st = new StringTokenizer(br.readLine());
          return st.nextToken();
       }
       int nextInt() throws IOException { return Integer.parseInt(next()); }
       long nextLong() throws IOException { return Long.parseLong(next()); }
       double nextDouble() throws IOException { return Double.parseDouble(next()); }
       String nextLine() throws IOException { return br.readLine(); }
    }

}