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 108
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import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.BufferedWriter;
import java.util.InputMismatchException;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.io.Writer;
import java.math.BigInteger;
import java.io.InputStream;

/**
 * Built using CHelper plug-in
 * Actual solution is at the top
 * @author sandeepandey
 */
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);
		KolyaAndTandemRepeat solver = new KolyaAndTandemRepeat();
		solver.solve(1, in, out);
		out.close();
	}
}

class KolyaAndTandemRepeat {
    public void solve(int testNumber, InputReader in, OutputWriter out) {

        String input    =   in.readString();
        int    k        =   in.readInt();


        int    last     =   input.length()-1;
        int    start    =   Math.max(0,last-k-1);


        //out.printLine("last:"+last+" start:"+start);


        String tandemString =   input + input.substring(start+1,last);

        //out.printLine(tandemString);

        out.printLine(tandemString.substring(start).length());


    }
}

class InputReader {

    private InputStream stream;

    private byte[] buf = new byte[1024];

    private int curChar;

    private int numChars;

    private SpaceCharFilter filter;
    public InputReader(InputStream stream) {

        this.stream = stream;

    }



    public int read() {

        if (numChars == -1)

            throw new InputMismatchException();

        if (curChar >= numChars) {

            curChar = 0;

            try {

                numChars = stream.read(buf);

            } catch (IOException e) {

                throw new InputMismatchException();

            }

            if (numChars <= 0)

                return -1;

        }

        return buf[curChar++];

    }


    public int readInt() {

        int c = read();

        while (isSpaceChar(c))

            c = read();

        int sgn = 1;

        if (c == '-') {

            sgn = -1;

            c = read();

        }

        int res = 0;

        do {

            if (c < '0' || c > '9')

                throw new InputMismatchException();

            res *= 10;

            res += c - '0';

            c = read();

        } while (!isSpaceChar(c));

        return res * sgn;

    }


    public String readString() {

        int c = read();

        while (isSpaceChar(c))

            c = read();

        StringBuffer res = new StringBuffer();

        do {

            res.appendCodePoint(c);

            c = read();

        } while (!isSpaceChar(c));

        return res.toString();

    }



    public boolean isSpaceChar(int c) {

        if (filter != null)

            return filter.isSpaceChar(c);

        return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1;

    }


    public interface SpaceCharFilter {

        public boolean isSpaceChar(int ch);

    }

}

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 print(Object...objects) {

        for (int i = 0; i < objects.length; i++) {

            if (i != 0)

                writer.print(' ');

            writer.print(objects[i]);

        }

    }



    public void printLine(Object...objects) {

        print(objects);

        writer.println();

    }


    public void close() {

        writer.close();

    }


}

