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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.InputStreamReader;
import java.util.*;

import static java.lang.Math.*;

public class Main2 {

    private FastScanner scanner = new FastScanner();

    public static void main(String[] args) {
        new Main2().solve();
    }

    private void solve() {
        String s = scanner.nextLine();
        int k = scanner.nextInt(), n = s.length();

        int max = Integer.MIN_VALUE;


        for (int i = 0; i < n - 1; i++) {
            for (int j = 1; j <= Math.min(i + 1, k + n - i); j++) {
                if (check(s, i, j)) {
                    max = Math.max(max, j);
                }
            }
        }

        System.out.println(max * 2);
    }


    boolean check(String s, int pos, int l) {

        boolean ok = true;
        for (int i = 1; i <= l; i++) {
            if (pos + i >= s.length()) {
                continue;
            }
            if (s.charAt(pos - l + i) != s.charAt(pos + i)) {
                ok = false;
            }
        }
        return ok;
    }


    class Pair {
        int c, f;
    }

    class FastScanner {
        BufferedReader reader;
        StringTokenizer tokenizer;

        FastScanner() {
            reader = new BufferedReader(new InputStreamReader(System.in), 32768);
            tokenizer = null;
        }

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

        }

        int nextInt() {
            return Integer.parseInt(next());
        }

        Integer[] nextA(int n) {
            Integer a[] = new Integer[n];
            for (int i = 0; i < n; i++) {
                a[i] = scanner.nextInt();
            }
            return a;
        }

        public long nextLong() {
            return Long.parseLong(next());
        }

        public double nextDouble() {
            return Double.parseDouble(next());
        }

        public String nextLine() {
            try {
                return reader.readLine();
            } catch (IOException e) {
                throw new RuntimeException(e);
            }
        }
    }
}