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 6
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 108
 6
 334
 280
 20
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 60
 10
 142
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 120
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 60
 230
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 46
 74
 54
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 2
 86

import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
import java.io.*;
import java.math.*;
import java.text.*;
import java.util.*;

import static java.lang.Math.min;
import static java.lang.Math.max;

/*
br = new BufferedReader(new FileReader("input.txt"));
pw = new PrintWriter(new BufferedWriter(new FileWriter("output.txt")));
br = new BufferedReader(new InputStreamReader(System.in));
pw = new PrintWriter(new BufferedWriter(new OutputStreamWriter(System.out)));
 */

public class Main {
	private static BufferedReader br;
	private static StringTokenizer st;
	private static PrintWriter pw;

	public static void main(String[] args) throws IOException	{
		br = new BufferedReader(new InputStreamReader(System.in));
		pw = new PrintWriter(new BufferedWriter(new OutputStreamWriter(System.out)));
		int qq = 1;
		//int qq = Integer.MAX_VALUE;
		//int qq = readInt();
		for(int casenum = 1; casenum <= qq; casenum++)	{
			String str = nextToken();
			int k = readInt();
			while(k-- > 0) {
				str += "?";
			}
			int ret = 0;
			for(int i = 0; i < str.length(); i++) {
				for(int j = i+2; j <= str.length(); j += 2) {
					if(can(str.substring(i,j))) {
						ret = Math.max(ret, j-i);
					}
				}
			}
			pw.println(ret);
		}
		pw.close();
	}

	public static boolean can(String s) {
		int shift = s.length()/2;
		for(int i = 0; i < shift; i++) {
			char a = s.charAt(i);
			char b = s.charAt(i+shift);
			if(a != '?' && b != '?' && a != b) return false;
		}
		return true;
	}
	
	private static void exitImmediately()	{
		pw.close();
		System.exit(0);
	}

	private static long readLong() throws IOException	{
		return Long.parseLong(nextToken());
	}

	private static double readDouble() throws IOException	{
		return Double.parseDouble(nextToken());
	}

	private static int readInt() throws IOException	{
		return Integer.parseInt(nextToken());
	}

	private static String nextToken() throws IOException	{
		while(st == null || !st.hasMoreTokens())	{
			if(!br.ready())	{
				exitImmediately();
			}
			st = new StringTokenizer(br.readLine().trim());
		}
		return st.nextToken();
	}
}

