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141
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150
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3
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10
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1
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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.util.Scanner;


public class B443 {
    public static void main(String args[]) {
        Scanner in = new Scanner(System.in);
        String st = in.next();
        String extra,test;
        int k = in.nextInt();
        int res=0;
        if (st.length()<=k) {
            System.out.println(((st.length()+k)-(st.length()+k)%2));
            System.exit(0);
        }
        for (int j=(st.length()+k)-(st.length()+k)%2 ; j>0 ; j-=2) {
            //System.out.println("j:"+j);
            for (int i=0 ; i<st.length()-k+1 ; i++) {
                extra=st.substring(i, i+k);
                //System.out.println(extra);
                test=st.concat(extra);
                //System.out.println(test);
                //System.out.println(test.substring(test.length()-j, test.length())+" "+
                    //  isTandem(test.substring(test.length()-j, test.length())));
                if (st.length()>=j) {
                    for (int c=0 ; c<st.length()-j+1 ; c++) {
                        //System.out.println(j+" "+st.substring(c, c+j));
                        if (isTandem(st.substring(c, c+j))) {
                            System.out.println(j);
                            System.exit(0);
                        }
                    }
                }
                if (isTandem(test.substring(test.length()-j, test.length()))) {
                    System.out.println(j);
                    System.exit(0);
                }
            }
        }
        System.out.println(res);
    }
    static boolean isTandem(String s) {
        int i=0;
        while(i<s.length()/2&&s.charAt(i)==s.charAt(i+s.length()/2)) {
            i++;
        }
        if (i==s.length()/2)
            return true;
        else return false;
    }
}
