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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
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 46
 74
 54
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 2
 86

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.StringTokenizer;


public class B {
        static InputReader in;
        static PrintWriter out;
        static String str;
        static int s;
        static int k;
    
    public static boolean compare(int start1, int start2, int L){   //starting indices, and length of the string
        while(start2 <= s){
            boolean a=str.charAt(start1-1) == str.charAt(start2-1);
            //out.println("Comparing two strings of length " + L + "which are starts at: " +start1 + " " + start2 + "respectively");
            if(!a){
                return false;
            }
            start1++;
            start2++;
        }
        return true;
    }
    
    public static void main(String[] args) {
        in= new InputReader(System.in);
        out= new PrintWriter(System.out,true);
        str= in.next();
        s=str.length();
        k =in.nextInt();
        if(k==str.length()) out.println(2*k);
        else if( k > str.length()) out.println((k+str.length())/2);
        else{
            int length=(k+s)/2;
            
            mainLoop:
            while(true){
                int i=1;
                while(i+length+length-1 <= s+k){ // last index of a tandem substring.
                    boolean isTandem=compare(i, i+length, length);
                    if(isTandem){
                        //out.println("the tandem starts at index" + i);
                        out.println(2*length);
                        break mainLoop;
                    }
                    i++;
                }
                length--;
            }
        }
        out.close();
        System.exit(0);
        
    }
    
    static class InputReader {
        public BufferedReader reader;
        public StringTokenizer tokenizer;

        public InputReader(InputStream stream) {
          reader = new BufferedReader(new InputStreamReader(stream), 32768);
          tokenizer = null;
        }

        public String next() {
          while (tokenizer == null || !tokenizer.hasMoreTokens()) {
            try {
              tokenizer = new StringTokenizer(reader.readLine());
            } catch (IOException e) {
              throw new RuntimeException(e);
            }
          }
          return tokenizer.nextToken();
        }

        public int nextInt() {
          return Integer.parseInt(next());
        }
        
        public long nextLong() {
              return Long.parseLong(next());
        }
 }
}
