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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.*;
import java.util.*;

public class A {

	static boolean can(String s,int start,int k,int len)
	{
		int n=s.length();
		if(len%2==1 || n-start+k<len)
			return false;
		len>>=1;
		for(int i=start,j=0;i<n && j<len;i++,j++)
			if(i+len<n && s.charAt(i+len)!=s.charAt(i))
				return false;
		return true;
			
	}
	public static void main(String[] args) throws IOException {
		Scanner sc = new Scanner();
		PrintWriter out = new PrintWriter(System.out);
		String s=sc.next();
		int k=sc.nextInt();
		int ans=0;
		for(int len=s.length()+k;len>0;len--)
			for(int start=0;start<s.length();start++)
				if(can(s, start, k, len))
					ans=Math.max(ans, len);
		out.println(ans);
		out.close();

	}

	static class Scanner {
		BufferedReader br;
		StringTokenizer st;

		Scanner() {
			br = new BufferedReader(new InputStreamReader(System.in));
		}

		Scanner(String fileName) throws FileNotFoundException {
			br = new BufferedReader(new FileReader(fileName));
		}

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

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

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

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

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

	}

}