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 200
 6
 246
 220
 108
 6
 334
 280
 20
 266
 60
 10
 142
 58
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 134
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import java.io.BufferedReader;
import java.util.StringTokenizer;
import java.io.File;
import java.io.FileReader;
import java.io.InputStreamReader;
import java.io.PrintStream;
import java.io.InputStream;
import java.io.PrintWriter;

public class cf_443b
{
	static Scanner in;
	static PrintWriter out;
	public static void main (String argv[])
	{
		/*
		try {
			in = new Scanner(new File("tmp"));
		} catch (Exception e) {e.printStackTrace(); return; }
		// */ in = new Scanner(System.in);
		out = new PrintWriter(System.out);
		
		solve();
		out.close();
	}
	
	static void exit (int code)
	{
		out.close();
		System.exit(code);
	}
	
	static void solve ()
	{
		String str = in.nextString();
		int addSize = in.nextInt(), len = str.length() + addSize;
		
		int max_length = len / 2;
		for (int q = max_length; q >= 1; --q)
		{
//			out.println("Debug " + q);
			for (int start = 0; start <= len - q * 2; ++start)
			{
				int it = start, it1 = start + q, 
					end = Math.min(str.length(), it1 + q);
//				out.println("start " + start + " end " + end);
				boolean allBad = false;
				while (it1 < end && !allBad)
				{
					if (str.charAt(it) != str.charAt(it1))
						allBad = true;
					else
					{
						++it;
						++it1;
					}
				}
				if (!allBad)
				{
					out.println(2 * q);
					return;
				}
			}
		}
	}
	
	static class Scanner
	{
		BufferedReader bufReader;
		StringTokenizer tokens;
		
		public Scanner(InputStream stream)
		{
			bufReader = new BufferedReader(new InputStreamReader(stream));
			tokens = null;
		}
		
		public Scanner(File f)
		{
			try {
				bufReader = new BufferedReader(new FileReader(f));
			} catch (Exception e) { e.printStackTrace(); }
			tokens = null;
		}
		
		String next()
		{
			while (tokens == null || !tokens.hasMoreTokens())
			{
				try {
					tokens = new StringTokenizer(bufReader.readLine());
				} catch (Exception e) { e.printStackTrace(); }
			}
			return tokens.nextToken();
		}
		
		int nextInt()
		{
			return Integer.parseInt(next());
		}
		
		String nextString()
		{
			return next();
		}
	}
}
