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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.util.*;
import java.io.*;
//qestion code:
public class A implements Runnable {
	public long MOD = 1000000007;	
	public void solve() throws IOException {
            String s = nextToken();
            int L = nextInt();
            int answer = 0;
            
            
            for(int i= 0; i <= s.length() - L; i++){
                String app = s.substring(i, i+L);
                if(L % app.length() != 0) continue;
                
                StringBuilder sb = new StringBuilder();
                for(int k = 0; k < L / app.length(); k++) sb.append(app);
                
                String now = s + sb.toString();
                int nl = now.length();
                for(int k = 0; k < now.length(); k++){
                    if(isTandem(now.substring(k)))
                        answer = Math.max(nl - k, answer);
                }
            }
            System.out.println(answer);
	}
        
        private boolean isTandem(String s){
            int nl = s.length();
            if(nl % 2 !=0 || nl == 0) return false;
            
            int hald = nl / 2;
            for(int i =0 ; i < hald; i++){
                if(s.charAt(i) != s.charAt(hald + i)) return false;
            }
            return true;
        }

	
	
	
	
	
	
	
	
	
	
	
	
	//-----------------------------------------------------------
	public static void main(String[] args) {
		new A().run();
	}

        public void print1Int(int[] a){
                for(int i = 0; i < a.length; i++)
                        System.out.print(a[i] + " ");
                System.out.println();
        }
        
        public void print2Int(int[][] a){
                for(int i = 0; i < a.length; i++){
                        for(int j = 0; j < a[0].length; j++){
                                System.out.print(a[i][j] + " ");
                        }
                        System.out.println();
                }
        }
        
	public void run() {
		try {
			in = new BufferedReader(new InputStreamReader(System.in));
			tok = null;
			solve();
			in.close();
		} catch (IOException e) {
			System.exit(0);
		}
	}

	public String nextToken() throws IOException {
		while (tok == null || !tok.hasMoreTokens()) {
			tok = new StringTokenizer(in.readLine());
		}
		return tok.nextToken();
	}

	public int nextInt() throws IOException {
		return Integer.parseInt(nextToken());
	}

	public long nextLong() throws IOException {
		return Long.parseLong(nextToken());
	}

	public double nextDouble() throws IOException {
		return Double.parseDouble(nextToken());
	}

	BufferedReader in;
	StringTokenizer tok;
}