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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.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.util.StringTokenizer;


public class B {

    static StringTokenizer st;
    static BufferedReader br;
    static PrintWriter pw;
    public static void main(String[] args) throws IOException {
        br = new BufferedReader(new InputStreamReader(System.in));
        pw = new PrintWriter(new BufferedWriter(new OutputStreamWriter(System.out)));
        String s = next();
        int k = nextInt();
        int ans = 0;
        if (k >= s.length())
            ans = (s.length()+k) / 2 * 2;
        else {
            for (int i = 1; i <= (s.length()+k)/2; i++) {
                for (int begin = 0; begin+2*i <= s.length()+k; begin++) {
                    boolean ok = true;
                    for (int j = 0; j < i; j++) {
                        if (begin+i+j >= s.length() || s.charAt(begin+j)==s.charAt(begin+i+j))
                            continue;
                        else {
                            ok = false;
                            break;
                        }
                    }
                    if (ok)
                        ans = 2*i;
                }
            }
        }
        System.out.println(ans);
        pw.close();
    }
    private static int nextInt() throws IOException {
        return Integer.parseInt(next());
    }
    private static long nextLong() throws IOException {
        return Long.parseLong(next());
    }
    private static double nextDouble() throws IOException {
        return Double.parseDouble(next());
    }
    private static String next() throws IOException {
        while (st==null || !st.hasMoreTokens())
            st = new StringTokenizer(br.readLine());
        return st.nextToken();
    }
}
