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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
{
      static boolean equal(char[] a, int i, int j)
      {
     //       System.out.println("*********"+a[i]+"   "+a[j]);
            if(a[i] == '0' || a[j] == '0')
                  return true;
            
            
            return a[i]==a[j] ? true : false;
      }
      
      static boolean chk(char a[], int strt , int grp)
      {
            for(int j=0 ; j<grp/2 ; j++)
            {
                  if(!equal(a, strt+j, strt+grp/2+j))
                        return false;
            }
            
            return true;
      }
      
      public static void main(String[] args) throws IOException
      {
            try
            {  
                  Scanner sc = new Scanner(System.in);
                  BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
                  PrintWriter out = new PrintWriter(new OutputStreamWriter(System.out));
                  String input[];
                  
                  char a[] = new char[450];
                  Arrays.fill(a, '0');
                  
                  String str = br.readLine();
                  int len = str.length();
                  
                  for(int i=0 ; i<len ; i++)
                        a[i] = str.charAt(i);
                  
                  int k = Integer.parseInt(br.readLine());
                  
                  if(len<=k)
                  {
                        System.out.println((len+k)-((len+k)&1));
          //      System.out.println("***");
                        return;
                  }
                  
                  for(int grp=len+k ; grp>=0 ; grp--)
                  {
                        if((grp&1) > 0)
                              continue;
                        
                        for(int j=0 ; j+grp<=len+k ; j++)
                        {
                              if(chk(a, j, grp))
                              {
                                    System.out.println(grp);
                                 //   System.out.println(j);
                                    return;
                              }
                        }
                  }

                  System.out.println("0");
                  
                  out.close();
                 
            }
            
            catch(Exception ex)
            {
ex.printStackTrace(System.out);
                  ex.printStackTrace();
            }
      }
}
