#include <iostream>
#include <list>
#include <stdio.h>
#include <errno.h>
#include <dirent.h>
int main()
{
  DIR *dir;
  struct dirent *ent;
  if ((dir = opendir (".")) != NULL) {
    std::list <std::string> v;
    while ((ent = readdir (dir)) != NULL) {
      v.push_back(ent->d_name);
    }
    closedir (dir);
    v.sort();
    std::string a;
    for (std::list<std::string>::iterator it=v.begin(); it != v.end(); ++it)
    {
      if ((*it).size() >=1 && (*it)[0] != '.')
	a += *it + " ";
    }
    std::cout << a << std::endl;
  } else {
    /* could not open directory */
    perror ("");
    return 1;
  }
  return 0;
}