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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.util.*;
import java.io.*;

public class Main {

	BufferedReader in;
	StringTokenizer str = null;
	PrintWriter out;
	
	private String next() throws Exception{
		while (str == null || !str.hasMoreElements())
			str = new StringTokenizer(in.readLine());
		return str.nextToken();
	}
	
	private int nextInt() throws Exception{
		return Integer.parseInt(next());
	}
	
	private long nextLong() throws Exception{
		return Long.parseLong(next());
	}
	
	private double nextDouble() throws Exception{
		return Double.parseDouble(next());
	}
	
	public void run() throws Exception{
		in =  new BufferedReader(new InputStreamReader(System.in));
		out = new PrintWriter(System.out);
		char []a = next().toCharArray();
		int K = nextInt();
		int n = a.length;
		int max = (n + K)/2;
		for(int i=max;i>0;i--){
			for(int j=0;j<=n-i;j++){
				boolean ok = true;
				for(int k=j;k<j+i;k++){
					if (k + i >= n) {
						if (k + i >= n + K) {
							ok = false;
							break;
						}
					}else {
						if (a[k] != a[k + i]) {
							ok = false;
							break;
						}
					}
				}
				if (ok) {
					// System.out.println(j);
					out.println(2 * i);
					out.close();
					return;
				}
			}
		}
		out.println(0);
		out.close();
	}
		
	public static void main(String[] args) throws Exception{
		new Main().run();
	}
}
