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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
 190
 46
 74
 54
 400
 12
 2
 86

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {
        public static void main(String[] args) {
            BufferedReader r = new BufferedReader(new InputStreamReader(System.in));
            String s;
            int i;

            try {
                s = r.readLine();
                i = Integer.parseInt(r.readLine());
            }
            catch (IOException e) {
                System.out.println("couldn't read. " + e);
                return;
            }

            if (i>=s.length()) {
                System.out.println(((i+s.length())/2)*2);
                return;
            }

            int max = 0;
            for (int j = 0; j <= s.length()-i; j++) {
                //System.out.println("etap1 " + s + s.substring(j, j + i));
                int m = maxTandemLength(s + s.substring(j, j + i));
                if (m>max) max = m;
            }
            System.out.println(max);
            // write your code here
        }

    private static int maxTandemLength(String str) {
        if (str.length() <= 1) return 0;
        for (int candidateLength = (str.length() / 2) * 2; candidateLength>0; candidateLength-=2) {
            //System.out.println("etap2 " + candidateLength);
            for (int i = 0; i <= str.length() - candidateLength; i++) {
                String tandemCandidate = str.substring(i, i + candidateLength);
                //System.out.println("etap3 " + tandemCandidate);
                if (isTandem(tandemCandidate)) return candidateLength;
            }
        }
        return 1;
    }

    private static boolean isTandem(String tandemCandidate) {
        int half = tandemCandidate.length()/2;
        return tandemCandidate.substring(0, half).equals(tandemCandidate.substring(half));
    }

}