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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.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;


public class BruteForce443B {

	/**
	 * @param args
	 * @throws IOException 
	 */
	public static void main(String[] args) throws IOException {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		String s = br.readLine();
		int k = Integer.parseInt(br.readLine());
		
		int l = s.length() + k;
		if( l%2 != 0)
			l--;
		
		if(k >= s.length()) {
			System.out.println(l);
			return;
		}
		
		boolean isLong = false;
		while(!isLong){
			isLong = isLong(s,k,l);
			if(!isLong){
				l -= 2;
			}
		}
		System.out.println(l);
	}
	
	public static boolean isLong(String s, int k, int l){
		int length = s.length()+k-l;
		for (int i = 0; i <= length; i++) {
			int indexL = l/2 + i;
			if(indexL + l/2 <= s.length()){
				String firstS = s.substring(i, indexL);
				String secondS = s.substring(indexL, indexL + l/2);
				if(firstS.equals(secondS))
					return true;
			}
			else{
				int newL = l/2 - ((indexL + l/2) - s.length());
				String firstS = s.substring(i, i + newL);
				String secondS = s.substring(indexL,s.length());
				if (firstS.equals(secondS)) 	
					return true;
			}
		}
		return false;
	}

}
