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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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140
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133
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132
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150
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41
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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.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class CFTest141 {

	static BufferedReader br;

	public static void main(String[] args) {
		br = new BufferedReader(new InputStreamReader(System.in));

		try {

			String s = readLine();
			int k = readInt();
			br.close();

			int l = s.length();

			

			int min=0;
			if(k>=l){
				int val=(k+l);
				if(val%2==1)val--;
				System.out.println(val);
			}else{
				min=k*2;
				for(int i=l;i-->0;){
					String s1=s.substring(i);
					int nm=(l-i)+k;
					int ind=i-nm;
					if(ind<0)continue;
					String s2=s.substring(ind, i);
					if(s2.startsWith(s1)){
						min=Math.max(min, nm*2);
					}
					
				}
			}
			
			for(int i=1;i<=l;i++){
				
				for(int j=0;j+(i*2)<=l;j++){
					
					String s1=s.substring(j,j+i);
					String s2=s.substring(j+i,j+(i*2));
					if(s1.equals(s2)){
						min=Math.max(min, i);
					}
				}
			}
			System.out.println(min);

		} catch (IOException e) {
			e.printStackTrace();
		}

	}

	static public String readLine() throws IOException {
		return br.readLine();

	}

	static public String readString() throws IOException {
		return br.readLine();

	}

	static public long readlong() throws IOException {
		return Long.parseLong(br.readLine());
	}

	static public int readInt() throws IOException {
		return Integer.parseInt(br.readLine());
	}

	static public int[] readIntArr() throws IOException {
		String[] str = br.readLine().split(" ");
		int arr[] = new int[str.length];
		for (int i = 0; i < arr.length; i++)
			arr[i] = Integer.parseInt(str[i]);
		return arr;
	}

	static public double[] readDoubleArr() throws IOException {
		String[] str = br.readLine().split(" ");
		double arr[] = new double[str.length];
		for (int i = 0; i < arr.length; i++)
			arr[i] = Double.parseDouble(str[i]);
		return arr;
	}

	static public long[] readLongArr() throws IOException {
		String[] str = br.readLine().split(" ");
		long arr[] = new long[str.length];
		for (int i = 0; i < arr.length; i++)
			arr[i] = Long.parseLong(str[i]);
		return arr;
	}

	static public double readDouble() throws IOException {
		return Double.parseDouble(br.readLine());
	}
}
