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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.awt.Point;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.*;


public class Candidate {
    public static void main(String[] args) throws Exception {
        FastReader sc = new FastReader();
        StringBuilder s=new StringBuilder(sc.nextLine());
        int a=sc.nextInt();
        int n=s.length();
        if(a>=s.length()) System.out.println(((a+n)/2)*2);
        else{
            for(int i=1;i<=a;i++)s.append("!");
            n=s.length();
            int min=a+1;
            int max=n/2;
            for(int i=min;i<=max;i++){
                for(int j=i;j<=n-i;j++){
                    if(check(s.substring(j-i,j),s.substring(j,j+i))){
                        a=i;
                        break;
                    }
                }
            }
            System.out.println(a*2);
        }
    }
    public static boolean check(String x,String y){
        boolean z=true;
        for(int i=0;i<x.length();i++){
            if(y.charAt(i)!='!' && x.charAt(i)!=y.charAt(i)){
                z=false;
                break;
            }
        }
        return z;
    }
}
class FastReader {
    BufferedReader br;
    StringTokenizer st;

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

    String next() {
        while (st == null || !st.hasMoreElements()) {
            try {
                st = new StringTokenizer(br.readLine());
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        return st.nextToken();
    }

    int nextInt() {
        return Integer.parseInt(next());
    }

    long nextLong() {
        return Long.parseLong(next());
    }

    double nextDouble() {
        return Double.parseDouble(next());
    }

    String nextLine() {
        String str = "";
        try {
            str = br.readLine();
        } catch (IOException e) {
            e.printStackTrace();
        }
        return str;
    }
}

