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64
 200
 6
 246
 220
 108
 6
 334
 280
 20
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 60
 10
 142
 58
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 134
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import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.Collections;
import java.util.Iterator;
import java.util.LinkedList;
import java.util.StringTokenizer;
import java.util.TreeMap;

import javax.swing.text.html.ObjectView;

public class Main1 {

	static FastReader input = new FastReader();
	static PrintWriter out = new PrintWriter(System.out);

	public static void main (String[] args) throws IOException {
		
		String s = input.next();
		int k= input.nextInt();
		char [] x = s.toCharArray();
		int maxLength = Math.min(x.length<<1, k<<1); 
		
		
		for (int i = 0 ; i < x.length ; i++) {
			for (int j = i+1 ; j < x.length ; j++) {
				int length = j-i+1 ; 
				int l = j+1;
				for ( ; (l-j-1)<length&&l<x.length; l++) {
					if (x[l]!=x[l-length]) {
						l = -1 ; 
						break;
					}
				}
				
				if (l!=-1) {
					if ((l==x.length&&k>=length-(x.length-j-1))||x.length!=l) {
						maxLength = Math.max(maxLength, length<<1);
					}

				}
				
				
				
				
			}
		}
		
		if (k>=x.length) {
			maxLength = 2*x.length;
			k-=x.length;
			if (k%2==0) maxLength+=k;
			else maxLength+=(k-1);
		}
		
		System.out.println(maxLength);
		
		
	}

	static class FastReader {
		BufferedReader br;
		StringTokenizer st;

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

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

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

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

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

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

}