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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
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 54
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 2
 86

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

/**
 * Built using CHelper plug-in
 * Actual solution is at the top
 */
public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        InputReader in = new InputReader(inputStream);
        OutputWriter out = new OutputWriter(outputStream);
        BKolyaAndTandemRepeat solver = new BKolyaAndTandemRepeat();
        solver.solve(1, in, out);
        out.close();
    }

    static class BKolyaAndTandemRepeat {
        public void solve(int testNumber, InputReader in, OutputWriter out) {
            String s = in.next();
            int k = in.nextInt();
            if (k >= s.length()) {
                out.println(2 * s.length());
                return;
            }
            int ans = 2 * k;
            for (int i = 2; s.length() - k - i >= 0; i += 2) {
                if (valid(s, (2 * k + i) / 2, s.length() - k - i) && valid(s, (2 * k + i) / 2, s.length() - k - i + 1))
                    ans += 2;
                else break;
            }
            for (int i = 0; i < s.length(); i++) {
                for (int j = 1; j < s.length(); j++) {
                    int q = j;
                    if (i + j - 1 + j >= s.length()) break;
                    boolean flag = false;
                    int n = 0;
                    while (q > 0) {
                        if (s.charAt(i + n + j) != s.charAt(i + n)) {
                            flag = true;
                            break;
                        }
                        n++;
                        q--;
                    }
                    if (!flag) {
                        ans = Math.max(ans, 2 * j);
                    }
                }
            }
            out.println(ans);
        }

        static boolean valid(String s, int k, int i) {
            if (i + k >= s.length()) return true;
            if (s.charAt(i + k) == s.charAt(i)) return true;
            return false;
        }

    }

    static class OutputWriter {
        private final PrintWriter writer;

        public OutputWriter(OutputStream outputStream) {
            writer = new PrintWriter(new BufferedWriter(new OutputStreamWriter(outputStream)));
        }

        public OutputWriter(Writer writer) {
            this.writer = new PrintWriter(writer);
        }

        public void close() {
            writer.close();
        }

        public void println(int i) {
            writer.println(i);
        }

    }

    static class InputReader {
        BufferedReader reader;
        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());
        }

    }
}

