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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.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.StringTokenizer;


public class B {

	public static void main(String[] args) throws IOException 
	{
		Scanner sc = new Scanner(System.in);
		PrintWriter out = new PrintWriter(System.out);

		char[] s = sc.next().toCharArray();
		int n = s.length, k = sc.nextInt();
		int ans = (n + k) / 2 + 1;
		boolean exist = false;
		while(!exist)
		{
			--ans;
			for(int i = 0; i + ans * 2 <= n + k; ++i)
			{
				exist = true;
				for(int j = i + ans, l = 0; l < ans; ++l)
				{
					char c1 = i + l < n ? s[i + l] : '$';
					char c2 = j + l < n ? s[j + l] : c1;
					if(c1 != c2)
						exist = false;
				}
				if(exist)
					break;
			}		
		}
		out.println(ans * 2);
		out.flush();
		out.close();
	}

	static class Scanner 
	{
		StringTokenizer st;
		BufferedReader br;

		public Scanner(InputStream s){	br = new BufferedReader(new InputStreamReader(s));}

		public Scanner(FileReader r){	br = new BufferedReader(r);}

		public String next() throws IOException 
		{
			while (st == null || !st.hasMoreTokens()) 
				st = new StringTokenizer(br.readLine());
			return st.nextToken();
		}

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

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

		public String nextLine() throws IOException {return br.readLine();}

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

		public boolean ready() throws IOException {return br.ready();}


	}
}