#include <string>
#include <vector>
#include <list>
#include <cmath>
#include <algorithm>
#include <map>
#include <set>
#include <iostream>
#include <cstdio>
#include <cstdlib>
using namespace std;

typedef vector <string> SVec;

class BuildingStrings {
  public:
    vector <string> findAny(int K);
};

vector <string> BuildingStrings::findAny(int K)
{
    vector <string> rv;
  
    return rv;
}