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64
 200
 6
 246
 220
 108
 6
 334
 280
 20
 266
 60
 10
 142
 58
 120
 134
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 400
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 230
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 2
 86

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;

public class Main {

    IIO io;
    Main(IIO io){
        this.io = io;
    }

    public static void main(String[] args) throws IOException {
//
        Main m = new Main(new ConsoleIO());
        m.solve();

//        Tester test = new Tester();
//        test.run();
    }

    public void solve() {
        String first = io.readLine();
        int added = io.readInt();
        int maxL = first.length() + added;
        int half = maxL / 2;

        if (added >= first.length()) {
            io.writeLine(Integer.toString(maxL/2*2));
            return;
        }

        int a = half;
        for (; a > added; a--) {
            for (int i = 0; i + a + a <= maxL; i++) {
                boolean good = true;
                for (int j = i; j < i + a; j++) {
                    char q = first.charAt(j);
                    char w = j + a < first.length() ? first.charAt(j + a) : q;
                    if (q != w) good = false;
                }
                if(good){
                    io.writeLine(Integer.toString(a + a));
                    return;
                }
            }
        }

        io.writeLine(Integer.toString(a + a));
    }
}

class ConsoleIO extends BaseIO {
    BufferedReader br;

    public ConsoleIO(){
        br = new BufferedReader(new InputStreamReader(System.in));
    }

    public void writeLine(String s) {
        System.out.println(s);
    }

    public String readLine() {
        try {
            return br.readLine();
        }
        catch (Exception ex){
            return "";
        }
    }
}
abstract class BaseIO implements IIO {
    @Override
    public int readInt() {
        return Integer.parseInt(this.readLine());
    }

    @Override
    public int[] readIntArray() {
        String line = this.readLine();
        String[] nums = line.split(" ");
        int[] res = new int[nums.length];
        for (int i = 0; i < nums.length; i++) {
            res[i] = Integer.parseInt(nums[i]);
        }
        return res;
    }
}
interface IIO {
    void writeLine(String s);
    String readLine();
    int readInt();
    int[] readIntArray();
}

