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 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.*;
import java.util.StringTokenizer;

public class SolveContest {
    PrintWriter out;
    BufferedReader input;

    SolveContest() {
        try {
            input = new BufferedReader(new FileReader("input.txt"));
            out = new PrintWriter(new FileWriter("output.txt"), true);
            solver();
        } catch (Exception ex) {
            ex.printStackTrace();
            input = new BufferedReader(new InputStreamReader(System.in));
            out = new PrintWriter(System.out, true);
            solver();
        } finally {
            out.close();
            try {
                input.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    StringTokenizer st = new StringTokenizer("");

    private String nextToken() {
        while (!st.hasMoreElements()) {
            try {
                st = new StringTokenizer(input.readLine());
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return st.nextToken();
    }

    private int nextInt() {
        return Integer.parseInt(nextToken());
    }

    private long nextLong() {
        return Long.parseLong(nextToken());
    }

    private double nextDouble() {
        return Double.parseDouble(nextToken());
    }

    void solver() {
        String str = nextToken();
        int k = nextInt();
        for (; k > 0; k--) {
            str += '?';
        }
        for (int n = str.length()/2; n >= 1; n--) {
            for (int j = 0; j <= str.length() - 2 * n; j++) {
                boolean ans = true;
                for (int i = 0; i < n; i++) {
                    if (str.charAt(j+i+n) != '?' && str.charAt(j+i+n) != str.charAt(j+i))
                        ans = false;
                }
                if (ans) {
                    out.print(2*n);
                    out.close();
                    System.exit(0);
                }
            }
        }
    }

    public static void main(String[] args) {
        new SolveContest();
    }
}
