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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.awt.Point;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.math.BigInteger;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.Map;
import java.util.Queue;
import java.util.StringTokenizer;
import java.util.TreeMap;
import java.util.TreeSet;

public class A {

	private static BufferedReader in;
	private static StringTokenizer st;
	private static PrintWriter out;

	public static void main(String[] args) throws NumberFormatException,
			IOException {
		in = new BufferedReader(new InputStreamReader(System.in));
		st = new StringTokenizer("");
		out = new PrintWriter(new BufferedWriter(new OutputStreamWriter(
				System.out)));
String s  = next();
int n  = nextInt();
if(s.length()<=n){
	System.out.println((1+n/s.length())*s.length());
	return;
}
int max = 1;
for (int i = 0; i <=s.length()-n; i++) {
	String  p  =s+s.substring(i,i+n);
	for (int j =0; j < p.length(); j++) {
		for (int k =j+2; k <=p.length(); k+=2) {
			String y=p.substring(j,k);
			if(y.substring(0,y.length()/2).equals(y.substring(y.length()/2,y.length()))){
				max=Math.max(max, y.length());
			}
		}
	}
}
System.out.println(max);
		out.close();
	}

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

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

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

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

}