#include <iostream>
#include <string>
#include <vector>
using namespace std;

vector<string> PalindromFilter ( vector<string> words, int minLength )
{
    string w ;
    vector<string> otv;
    for ( int i=0 ;i<words.size();i++ )
    {
        w=words[i];
       int len = w.length();
       if (len>=minLength)
       {
        for(int i = 0; i < len/2; ++i)
            {
            if(w[i] != w[len-1])
                {
                break;
                } else {cout<<w;otv.push_back(w); }

            }
        }

    } return otv;
}
  int main() {
      vector<string> z {"abavwdvs","abacaba","aa"};
      int k=2;
      PalindromFilter (z,k);
 }