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 6
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 220
 108
 6
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 280
 20
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 60
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import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.HashMap;
import java.util.StringTokenizer;


public class Solution{
	
	///////////////////////////////////////////////////////////////////////////
	static class FastScanner{
		BufferedReader s;
		StringTokenizer st;
		
		public FastScanner(){
			st = new StringTokenizer("");
			s = new BufferedReader(new InputStreamReader(System.in));
		}
		
		public FastScanner(File f) throws FileNotFoundException{
			st = new StringTokenizer("");
			s = new BufferedReader (new FileReader(f));
		}
		
		public int nextInt() throws IOException{
			if(st.hasMoreTokens())
				return Integer.parseInt(st.nextToken());
			else{
				st = new StringTokenizer(s.readLine());
				return nextInt();
			}
		}
		
		public double nextDouble() throws IOException{
			if(st.hasMoreTokens())
				return Double.parseDouble(st.nextToken());
			else{
				st = new StringTokenizer(s.readLine());
				return nextDouble();
			}
		}
		
		public long nextLong() throws IOException{
			if(st.hasMoreTokens())
				return Long.parseLong(st.nextToken());
			else{
				st = new StringTokenizer(s.readLine());
				return nextLong();
			}
		}
		
		public String nextString() throws IOException{
			if(st.hasMoreTokens())
				return st.nextToken();
			else{
				st = new StringTokenizer(s.readLine());
				return nextString();
			}
			
		}
		public String readLine() throws IOException{
			return s.readLine();
		}
		
		public void close() throws IOException{
			s.close();
		}
		
	}
	
	////////////////////////////////////////////////////////////////////
	//		Number Theory
	
	long pow(long a,long b,long mod){
		long x = 1; long y = a;
		while(b > 0){
			if(b % 2 == 1){
				x = (x*y);
				x %= mod;
			}
			y = (y*y);
			y %= mod;
			b /= 2;			
		}
		return x;
	}
	
	int divisor(long x,long[] a){
	    long limit = x;
	    int numberOfDivisors = 0;

	    for (int i=1; i < limit; ++i) {
	        if (x % i == 0) {
	            limit = x / i;
	            if (limit != i) {
	                numberOfDivisors++;
	            }
	            numberOfDivisors++;
	        }
	    }
	    return numberOfDivisors;
    }
	
	void findSubsets(int array[]){
    	
	    long numOfSubsets = 1 << array.length; 
	    for(int i = 0; i < numOfSubsets; i++){
	    		
	    	int pos = array.length - 1;
	    	int bitmask = i;

	    	while(bitmask > 0){		
	    		if((bitmask & 1) == 1)
	   				ww.print(array[pos]+" ");
	   			bitmask >>= 1;
	        	pos--;
	    	}

	    	ww.println();
	   	}
	}
    
	
	public static int gcd(int a, int b){
		return b == 0 ? a : gcd(b,a%b);
	}
	
  
	public static int lcm(int a,int b, int c){
		return lcm(lcm(a,b),c);
	}
	
	public static int lcm(int a, int b){
		return a*b/gcd(a,b);
	}
	
	
	////////////////////////////////////////////////////////////////////
	
	
//	  private static  	FastScanner s = new FastScanner(new File("input.txt"));
//	  private static PrintWriter ww = new PrintWriter(new FileWriter("output.txt"));
	  private static FastScanner s = new FastScanner();   
      private static PrintWriter ww = new PrintWriter(new OutputStreamWriter(System.out));
//      private static Scanner s = new Scanner(System.in);
	@SuppressWarnings("unused")
	private static int[][] states = { {-1,0} , {1,0} , {0,-1} , {0,1} };
	
      
    //////////////////////////////////////////////////////////////////// 
      
     
    public static void main(String[] args) throws IOException{
 		new Solution().solve();
 	}
    
    ////////////////////////////////////////////////////////////////////
    
   
	void solve() throws IOException{
		
		
		String str = s.nextString();
		int len = s.nextInt();
		for(int i=0;i<len;i++)
			str += '?';
		
		len = str.length();
//		ww.println(len);
		int ans = 0;
		
		for(int i=0;i<len;i++){
			for(int j=i;j<len;j++){
				
				int flag = 0;
				String ss = str.substring(i,j+1);
	//			ww.println(ss);
				int len1 = ss.length();
				if(len1%2 != 0) continue;
				int mid = len1/2;
				int low = 0;
				int high = mid;
				while(low < mid){
					if(ss.charAt(low) != ss.charAt(high) && ss.charAt(low) != '?' && ss.charAt(high) != '?'){
						flag = 1;
						break;
					}
					low++;
					high++;
				}
				if(flag == 0){
	//				ww.println("hell");
					ans = Math.max(ans, len1);
				}
			}
		}
		
		ww.println(ans);
        s.close();
 	    ww.close(); 
     }
    
}