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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.util.*;
public class AC2 {
static int ai[];
    public static void main(String[] args) {
        // TODO Auto-generated method stub
        Scanner sca=new Scanner(System.in);
        String t=sca.next();
        int len=t.length();
        ai=new int[len+1];
        int k=sca.nextInt();
        if(k>=len){
            if((k+len)%2==0){
                System.out.println(k+len);
            }else{
                System.out.println(k+len-1);
            }
        }else{max=0;
            for(int i=1;i<=len;i++){
                ai[i]=t.charAt(i-1);
            }
            Search(1, k, len);
            System.out.println(max);
            
        }
    }static int max;
static void Search(int start,int k,int len){
    //System.out.println("YES");
//  if(start==3){
//      System.out.println("QQ");
//  }
    int p=k+len-start+1;
    if(p%2==0){
        int end=p/2;boolean ju=true;int q=1;
        for(int i=start;i<=end+start-1;i++){
            if(end+q+start-1<=len&&ai[i]!=ai[end+q]){
                ju=false;
                break;
            }
            q++;
        }
        if(ju){
        //  System.out.println(p+" "+start);
            
            max=Math.max(max, p);
        }else{
            start++;
            Search(start, k, len);
        }
    }else{
        int end=p/2;boolean ju=true;int q=1;
        for(int i=start;i<=end+start-1;i++){
            if(end+q+start-1<=len&&ai[i]!=ai[end+q]){
                ju=false;
                break;
            }
            q++;
        }
        if(ju){
            max=Math.max(max, p-1);
        //  System.out.println(p+" "+start);
        
        }else{
            start++;
            Search(start, k, len);
            start--;
        }
        start++;
         end=(p)/2; ju=true; q=1;
        for(int i=start;i<=end+start-1;i++){
            if(end+q+start-1<=len&&ai[i]!=ai[end+q]){
                ju=false;
                break;
            }
            q++;
        }
        if(ju){
            max=Math.max(max, p-1);
        //  System.out.println(p+" "+start);
        }else{
            start++;
            Search(start, k, len);
        }
    }
}
}
