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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 B {
	static BufferedReader stdin = new BufferedReader(
			new InputStreamReader(System.in));
	static StringTokenizer st = new StringTokenizer("");
	
	static boolean findTandemRepeat(String s, int length) {
		for (int i = 0; i <= s.length() - length; i++) {
			int i2 = i + length/2;
			boolean match = true;
			for (int j = 0; j < length/2; j++) {
				if (s.charAt(i+j) != s.charAt(i2+j) && s.charAt(i2+j) != '*') {
					match = false;
					break;
				}
			}
			if (match) {
				return true;
			}
		}
		return false;
	}

	public static void main(String[] args) throws Exception {
		String s = readString();
		int k = readInt();
		
		for (int i = 0; i < k; i++) {
			s += "*";
		}
		
		for (int l = (s.length() / 2) * 2; l >= 0; l -= 2) {
			if (findTandemRepeat(s, l)) {
				System.out.println(l);
				break;
			}
		}
	}

	// Read next input-token as string.
	static String readString() throws Exception {
		while (!st.hasMoreTokens()) {
			st = new StringTokenizer(stdin.readLine());
		}
		return st.nextToken();
	}

	// Read next input-token as integer.
	static int readInt() throws Exception {
		return Integer.parseInt(readString());
	}

	// Read next input-token as double.
	static double readDouble() throws Exception {
		return Double.parseDouble(readString());
	}
}
