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 108
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 334
 280
 20
 266
 60
 10
 142
 58
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 134
 172
 400
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 230
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 46
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 2
 86

#include <bits/stdc++.h>
using namespace std;
void calcu(vector<long long int> vec, long long int n);
const int MAXN = 412345;
const int MAXINT = 2047483098;
const long long int MOD = 1e9 + 7;
const int MAX = 1e4;
const long double pi = 2 * acosl(0);
const long double EPS = 1e-10;
int gcd(int a, int b) {
  if (b == 0) return a;
  return gcd(b, a % b);
}
bool isPrime(long long unsigned n) {
  if (n <= 1) return false;
  if (n <= 3) return true;
  if (n % 2 == 0 || n % 3 == 0) return false;
  for (long long int i = 5; i * i <= n; i = i + 6)
    if (n % i == 0 || n % (i + 2) == 0) return false;
  return true;
}
int nCr(int n, int r) {
  int res = 1;
  if (n < r) return -1;
  r = min(r, n - r);
  for (long long int i = 0; i < r; i++) {
    res *= (n - i);
    res /= (i + 1);
  }
  return res;
}
bool comp(pair<long long int, long long int> &a,
          pair<long long int, long long int> &b) {
  if (a.first != b.first)
    return a.first > b.first;
  else {
    return a.second < b.second;
  }
}
void solve() {
  string s;
  cin >> s;
  long long int k;
  cin >> k;
  if (k >= s.length()) {
    if ((s.length() + k) % 2 == 0) {
      cout << s.length() + k;
    } else {
      cout << s.length() + k - 1;
    }
  }
  vector<string> vec;
  long long int n = s.length();
  long long int ans = 0;
  for (long long int i = 0; i < n; i++) {
    for (long long int l = 1; i + l < n; l++) {
      string dummy = s.substr(i, l);
      dummy += dummy;
      if ((dummy.length() > s.length()) && dummy.length() - s.length() > k) {
        continue;
      }
      bool cool = true;
      for (long long int j = 0; j < dummy.size(); j++) {
        if (i + j >= n) break;
        if (dummy[j] != s[i + j]) {
          cool = false;
          break;
        }
      }
      long long int ss = dummy.length();
      if (cool) ans = max(ans, ss);
    }
  }
  cout << ans;
}
int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  int T = 1;
  while (T--) {
    solve();
  }
  return 0;
}
