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 6
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 108
 6
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 280
 20
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 60
 10
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 86

#include <bits/stdc++.h>
using namespace std;
struct point {
  int x, y;
  point() {}
  point(int a, int b) { x = a, y = b; }
};
template <class T>
T sqr(T a) {
  return a * a;
}
template <class T>
T power(T n, T p) {
  T res = 1;
  for (int i = 0; i < p; i++) res *= n;
  return res;
}
template <class T>
double getdist(T a, T b) {
  return sqrt((a.x - b.x) * (a.x - b.x) + (a.y - b.y) * (a.y - b.y));
}
template <class T>
T extract(string s, T ret) {
  stringstream ss(s);
  ss >> ret;
  return ret;
}
template <class T>
string tostring(T n) {
  stringstream ss;
  ss << n;
  return ss.str();
}
template <class T>
inline T Mod(T n, T m) {
  return (n % m + m) % m;
}
template <class T>
void print_all(T v) {
  for (int i = 0; i < v.size(); i++) cout << v[i] << ' ';
};
template <class T>
void print_all(T &v, int len) {
  for (int i = 0; i < len; i++) cout << v[i] << ' ';
}
template <class T>
void print_pair(T v, int len) {
  for (int i = 0; i < len; i++)
    cout << v[i].first << ' ' << v[i].second << endl;
}
long long bigmod(long long B, long long P, long long M) {
  long long R = 1;
  while (P > 0) {
    if (P % 2 == 1) {
      R = (R * B) % M;
    }
    P /= 2;
    B = (B * B) % M;
  }
  return R;
}
int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  string s;
  int mx, tem, i, k, l, rem, r;
  cin >> s >> k;
  if (k > (int)(s.size())) {
    mx = (k + (int)(s.size())) - ((k + (int)(s.size())) % 2);
    cout << mx << endl;
    return 0;
  } else
    mx = 2 * k;
  for (i = (int)(s.size()) - 1; i >= 0; i--) {
    rem = k;
    tem = 0;
    l = i - (k + (int)(s.size()) - i), r = i;
    while (rem && l < i && l >= 0) {
      if (r >= (int)(s.size()))
        rem--;
      else if (s[l] != s[r]) {
        tem = 0;
        break;
      }
      tem += 2;
      l++;
      r++;
    }
    mx = max(mx, tem);
  }
  cout << mx << endl;
  return 0;
}
