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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;
import java.io.PrintWriter;
import java.util.StringTokenizer;

/**
 * @author Don Li
 */
public class KolyaTandemRepeat {
    void solve() {
        char[] s = in.nextToken().toCharArray();
        int n = s.length, k = in.nextInt();
        
        if (k >= n) {
            out.println((n + k) / 2 * 2);
            return;
        }
        
        int ans = 2 * k;
        for (int i = 0; i < n + k; i++) {
            for (int j = i + 1; j < n + k; j++) {
                int m = (j - i + 1);
                if (m <= ans || m % 2 > 0) continue;
                m /= 2;
                boolean ok = true;
                for (int t = 0; t < m; t++) {
                    char x = i + t < n ? s[i + t] : '*';
                    char y = i + t + m < n ? s[i + t + m] : '*';
                    if (x != '*' && y != '*' && x != y) {
                        ok = false;
                        break;
                    }
                }
                if (ok) ans = 2 * m;
            }
        }
        
        out.println(ans);
    }
    
    public static void main(String[] args) {
        in = new FastScanner(new BufferedReader(new InputStreamReader(System.in)));
        out = new PrintWriter(System.out);
        new KolyaTandemRepeat().solve();
        out.close();
    }
    
    static FastScanner in;
    static PrintWriter out;
    
    static class FastScanner {
        BufferedReader in;
        StringTokenizer st;
        
        public FastScanner(BufferedReader in) {
            this.in = in;
        }
        
        public String nextToken() {
            while (st == null || !st.hasMoreTokens()) {
                try {
                    st = new StringTokenizer(in.readLine());
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }
        
        public int nextInt() {
            return Integer.parseInt(nextToken());
        }
        
        public long nextLong() {
            return Long.parseLong(nextToken());
        }
        
        public double nextDouble() {
            return Double.parseDouble(nextToken());
        }
    }
}
