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32
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100
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3
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2
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141
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150
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41
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3
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57
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32
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200
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10
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1
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23

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.math.*;
import java.util.*;

public class SolutionB {

	public static void main(String[] args) {
		new SolutionB().run();
	}
	char c[];
	int k;
	int n;
	boolean check(int x){
		String S = "";
		for(int i = 0; i < n + k; i++){
			if(i < n) S += c[i];
			else if( i >= x) S += S.charAt(S.length()-x);
			else S += 'a';
		}
		int last = -1;
		for(int i = x; i < n + k; i++){
			if(S.charAt(i) != S.charAt(i - x)){
				if(i - last > x) return true;
				last = i;
			}
		}
		if(n + k - last > x) return true;
		return false;
	}
	void solve() {
		c = in.next().toCharArray();
		k = in.nextInt();
		n = c.length;
		for(int i = (n + k)/2; i>0; i--){
			if(check(i)){
				out.println(i * 2);
				return;
			}
		}
	}

	class Pair implements Comparable<Pair> {
		int x, y;

		Pair(int x, int y) {
			this.x = x;
			this.y = y;
		}

		@Override
		public int compareTo(Pair o) {
			if (o.x == x)
				return ((Integer) y).compareTo(o.y);
			return ((Integer) x).compareTo(o.x);
		}

	}
	
	FastScanner in;
	PrintWriter out;

	void run() {
		in = new FastScanner(System.in);
		out = new PrintWriter(new OutputStreamWriter(System.out));
		solve();
		out.close();
	}

	void runIO() {
		try {
			in = new FastScanner(new File("expr.in"));
			out = new PrintWriter(new FileWriter(new File("expr.out")));
			solve();
			out.close();
		} catch (Exception ex) {
			ex.printStackTrace();
		}
	}

	class FastScanner {
		BufferedReader bf;
		StringTokenizer st;

		public FastScanner(File f) {
			try {
				bf = new BufferedReader(new FileReader(f));
			} catch (IOException ex) {
				ex.printStackTrace();
			}
		}

		public FastScanner(InputStream is) {
			bf = new BufferedReader(new InputStreamReader(is), 32768);
		}

		String next() {
			while (st == null || !st.hasMoreTokens()) {
				try {
					st = new StringTokenizer(bf.readLine());
				} catch (IOException ex) {
					ex.printStackTrace();
				}
			}
			return st.nextToken();
		}

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

		double nextDouble() {
			return Double.parseDouble(next());
		}

		float nextFloat() {
			return Float.parseFloat(next());
		}

		String nextLine() {
			try {
				return bf.readLine();
			} catch (Exception ex) {
				ex.printStackTrace();
			}
			return "";
		}

		long nextLong() {
			return Long.parseLong(next());
		}

		BigInteger nextBigInteger() {
			return new BigInteger(next());
		}

		BigDecimal nextBigDecimal() {
			return new BigDecimal(next());
		}

		int[] nextIntArray(int n) {
			int a[] = new int[n];
			for (int i = 0; i < n; i++)
				a[i] = Integer.parseInt(next());
			return a;
		}

		long[] nextLongArray(int n) {
			long a[] = new long[n];
			for (int i = 0; i < n; i++)
				a[i] = Long.parseLong(next());
			return a;
		}
	}
}