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 220
 108
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 280
 20
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 60
 10
 142
 58
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 400
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 60
 230
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 190
 46
 74
 54
 400
 12
 2
 86

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Scanner;
import java.util.TreeMap;
import java.util.TreeSet;


public class Main {

	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		StringBuilder sb = new StringBuilder();
		String st = sc.nextLine();
		int k = sc.nextInt();
		TreeSet<Character> ts = new TreeSet();
		//TreeMap<Integer,Integer> tm = new TreeMap<Integer,Integer>();
		//ArrayList<ArrayList<Integer>> tubes = new ArrayList<ArrayList<Integer>>();
		//ArrayList<Integer[]> al = new ArrayList<Integer[]>();
		int x;
		int max = 0;
		
		for (int i = 0; i <= st.length(); i++) {
		LOOP2:	for (int t = i+1; t < st.length(); t++) {
				x = 0;
				for (int u = 0; u < Math.min(st.length()-t,t-i); u++) {
					if (st.charAt(i+u) != st.charAt(t+u)) {
						
						continue LOOP2;
					}
					x++;
				}
				
				max = Math.max(max, x*2);
			}
		}
		
		for (int i = 1; i <= st.length()/2; i++) {
			LOOP2:	for (int t = i+1; t <= Math.min(st.length(), i+1+k); t++) {
					x = 0;
					for (int u = 0; u < i; u++) {
						//System.out.println(st.charAt((st.length()-i)+u)+ ":"+st.charAt((st.length()-t)+u));
						if (st.charAt((st.length()-i)+u) != st.charAt((st.length()-t)+u)) {
							
							continue LOOP2;
						}
						x++;
					}
					max = Math.max(max, (t - i)*2);
					//System.out.println(i+ ":"+t+":"+max);
				}
			}
		
		System.out.println(Math.max(max, k*2));
		
	}









}
