jtifziirovbklaioslunwvtdavraandnzcwqbealbvqonoxufqrsewwrzvkrecrfqhdduwmcdcdhdtvpyshfhgdwdkmglskidhzayvouwhumzhcphocqyfcdddhzayvouwhumzhcphocqyfcddayfakoxofjgusuonehbxbokjsdlktqrcdurogxltsysyjbiagrvhky
32
 kbxuunznjtxutlauuuipifggjjkequbpvbagmxojhgxtakxioxsmrmoatlyzwsygibhafspqnfbycyztxmtpirqcyhalluhhubne
100
 zwvrx
3
 wccknxhbqzjwaseubvizxuisnzneatgjhaatrfydssgzufyztesrxnjlbhckybqlbncvqgjcoupirpqnnmacejicjzhattqolmclqnotctcsliyvjwutvrtrhichssehtlwbrq
123
 cznjenwypyeulxzdxfhalfbyefhhgieybtzjmbdirrpybxnftpcqfhrhiifsfkllztwejdvhvtnxecnfgwwxhhcsjsqzhrjddauttbxphfzljgbvcqshateqeulxzdxfhalfbyefhhgieybtzjmbdirrpybxnftpcqfhrhiifsfkllztwejdvhvtnxecnfgwwxhhcsjs
41
 ezlrqvaeekbnkqqjcijtkaoisqpbguqfsqxtzjotdhtrnaoxutybbqzzhrqvaeekbnkqqjcijtkaoisqpbguqfsqxtzjotdhtrnaoxutybbqzzhzoeptxwaunvarfcapxsnamwjyqpxbiegizqotuqen
15
 zumtumtlitf
2
 wqlvwkiiqfmesejedhyjjfgzqfmiqyaiqefzaywrdundcmbfvhdflrpvkitbltbrzedvozltptkaanbpmjvsdnpthcepfydrdlscexczxwzyatupzlxdhnezdsipeyjqmbvoavsgeuulkqkexpwpttvxeovcjrqnzdeiaatzglvwkiiqfmesejedhyjjfgzqfmiqyaiq
141
 nemtbujbscvkgxnbqboeohzfozihjvhcllfseiouggzojhqcoqrvtdsgkubiophnhahgplhtjxblicnavkayzsydmxphgfvhlllontqfpqitrpjiadpmogtqyjhqfpqitrpjiadpmogtqyjhvaopbzglvdmwzsrhtsszyengbihrrzljvofgugmjedgujhzvlebpprue
140
 skllmtqzajnzjkuflkazjku
10
 ngkdgsdxouojadjqzgxewuuyxdlxulgrblxpkyzhgmkeatmhvbdelmxxrqtsarfvotcxfuiqsxbnczbadelhxtlfwrnbisayeveiejvycllhkictyyriqseznziyurlgiejvycllhkictyyriqseznziyurlgwiubyvqfmabhstqalicamyholkqlvtjfhcfbyr
133
 uzfvkgoaimitrlfjn
43
 ijtvifbuajod
5
 cxpleheyfwu
132
 lfydqwrwevvvclkkainwxwvqf
33
 kitxizqtbzwjqldmhwpmznaoddtgqzithwvyeyuixxhlnmksmsysikftzrskbnriebbwzermgcxalwpmznaoddtgqzithwvyeyuixxhlnmksmsy
32
 uqytussdzppiuwxterrfyrwtsrkdpfzhjpeuuulopnnjtltdtlkzwixouxteuheqaxhaicoeveggwkcnkamluxykyktmvafajfnxmeuuulopnnjtltdtlkzwixouxteuheqaxhaicoeveggwkcnkamluxykyktmvafajfnxmefkurbbcbesiwcauwmlhmfslcavsreea
41
 xaxgnvphqavbuxzkcsptsih
150
 zonkpassuptcnpeoogztfpaspwdwnmiwsxeskfajlpfswzrdcxhlzxrgddtgmnngevbiybdnwelkzonhrzgldriyymrzduulifphxypcaqurgeqitkxxnsqdpsxattjoncmhihgxdaxixkmockynyjefvhrzgldriyymrzduulifphxypcaqurgeqitkxxnsqdpsxatt
200
 ifglyzxttgfpcgvpfmfmjhuzmgmaiivnbrzjevgxosclwqfewklzstkjmnjmqgpeshndmzrtthpjbhuqoldgvkkmkqinkptatpytrchkvjyeimsfmjhuzmgmaiivnbrzjevgxosclwqfewklzstkjmnjmqgpeshndmzrtthpjbhuqoldgvkkmkqinkptatpytrchkvjy
15
 mklxokaoaxzccddmsxzc
41
 eluswgbaoqmkfymoidkripnpgmbvhydcuupfhecefgosemhverqwzxklzzacdgcrrlzdnocxmzxtiamqpxspfogqhrlsnfzdexamrkowqpqggolnrvxfhenedmfzngnavgnjkzsnkjjjfcgfqjuywmrt
115
 xbmrxbmrkzovhb
3
 ktkkckrzvjhdspjmtljrmwgfoxeuadhajkfjpcmquqldlkutwyqaupnypwqfbxbuaaywcflplmqxnvwmkzpdvvkgxkmsggxmdangeyudqrgrihgbljrmwgfoxeuadhajkfjpcmquqldlkutwyqaupnypwqfbxbuaaywcflplmqxnvwmkzpdvvkgxkmsggxmdangeyudq
57
 thdnszfpaznmjlzacpovjcvybdkynhnvkaxvncfpofvnfpkggyfvqbklvrnbwpjswbrvjvqyzheslzxvuuqpbrvjvqyzheslzxvuuqprxasesuweenacripkyevplccdlxocfuqklypxactpajkmhcsgbxwgznizwndthualdbbgxhrtdrodoiddzdmxtatssfsuksqz
23
 fonwebmlwaxthdwche
57
 pdgrwrozhkrwwgebwvuilwm
32
 jhfwjyyzwrjiyrrgveiqkoltivghgkontrqragikttxxuwszjwqhwxindyrdqhucnbwgwrppgqmsasrzohezjlfmkzsqptwpratprcrxyxecnlsaiqrvimihmhjfgzwdtvmfhgbuonpsblphyoxzclkrwbwrkasahiirzqlfjdoomlosltldbpomyyhmdwfchzxnmwlh
200
 ayi
10
 eexlzphiay
1
 auxrkguktewrcwwklhmuxkgdialidacmjinwcsrtfrtdsvqsbwuqtsrmsyizsvdkbqwrbuphqqvzktqkskylnnqbezibqnaytuuqddrigdkbqwrbuphqqvzktqkskylnnqbezi
23

64
 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.OutputStream;
import java.io.IOException;
import java.io.PrintWriter;
import java.util.InputMismatchException;
import java.math.BigInteger;
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);
		PrintWriter out = new PrintWriter(outputStream);
		TaskB solver = new TaskB();
		solver.solve(1, in, out);
		out.close();
	}
}

class TaskB {
    public void solve(int testNumber, InputReader in, PrintWriter out) {
        String s = in.readLine();
        int k = in.readInt();
        for (int i = 0; i < k; i++) s = s + '?';
        int ans = 0;
        for (int i = 0; i < s.length(); i++) {
            for (int j = i + 1; j < s.length(); j+=2) {
                int len = j - i + 1;
                boolean good = true;
                for (int x  = i; x < len/2; x++)
                    if (s.charAt(x) != s.charAt(x + len/2) && s.charAt(x) != '?' && s.charAt(x + len/2) != '?') good = false;
                if (good) ans = Math.max(ans, len);
            }
        }
        out.println(ans);
    }
}

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 boolean isSpaceChar(int c) {
                if (filter != null)
                        return filter.isSpaceChar(c);
                return isWhitespace(c);
        }

        public static boolean isWhitespace(int c) {
                return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1;
        }

        private String readLine0() {
                StringBuilder buf = new StringBuilder();
                int c = read();
                while (c != '\n' && c != -1) {
                        if (c != '\r')
                                buf.appendCodePoint(c);
                        c = read();
                }
                return buf.toString();
        }

        public String readLine() {
                String s = readLine0();
                while (s.trim().length() == 0)
                        s = readLine0();
                return s;
        }

        public interface SpaceCharFilter {
                public boolean isSpaceChar(int ch);
        }
}

