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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.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintStream;
import java.io.PrintWriter;
import java.io.StreamTokenizer;

public class Solution {

    public static void main(String[] args) throws Exception {
        solve(System.in, System.out);
    }

    public static void solve(InputStream inputStream, PrintStream outputStream) throws Exception {
//        StreamTokenizer in = new StreamTokenizer(new BufferedReader(new InputStreamReader(inputStream)));
		BufferedReader in = new BufferedReader(new InputStreamReader(inputStream));
        PrintWriter out = new PrintWriter(new OutputStreamWriter(outputStream));

        String s = in.readLine();
        int k = Integer.valueOf(in.readLine());

        StringBuilder stringBuilder = new StringBuilder(s.length() + k).append(s);
        for (int i = 0; i < k; i++) {
            stringBuilder.append('*');
        }
        String ss = stringBuilder.toString();

        for (int hsize = ss.length() / 2; hsize > 0; hsize--) {
            for (int i = 0; i <= ss.length() - 2 * hsize; i++) {
                if (check(ss, i, hsize)) {
                    out.println(hsize * 2);
                    out.flush();
                    return;
                }
            }
        }

        out.flush();
    }

    private static boolean check(String ss, int i, int hsize) {
        for (int offset = 0; offset < hsize; offset++) {
            if (ss.charAt(i + offset + hsize) != '*' && ss.charAt(i + offset + hsize) != ss.charAt(i + offset)) {
                return false;
            }
        }
        return true;
    }

    private static double readDouble(StreamTokenizer in) throws Exception { in.nextToken(); return in.nval; }
    private static float readFloat(StreamTokenizer in) throws Exception { return (float) readDouble(in); }
    private static int readInteger(StreamTokenizer in) throws Exception { return (int) readDouble(in); }
    private static long readLong(StreamTokenizer in) throws Exception { return (long) readDouble(in); }
    private static byte readByte(StreamTokenizer in) throws Exception { return (byte) readDouble(in); }

}