#include <string>
#include <iostream>

/*
  Put your code here
  
  Or even better, place it in another file
  and include that file.
 */

struct Hello_Worlder
{
  std::string get()
  {
    return "hello world!";
  }
};

/* The output should be:

0
str1 str2
hello world!
++++++++++
3
1
2

*/

int main()
{
  using std::cout;
  using std::endl;
  using std::string;

  cout << count<string>() << endl;
  
  Tracker<string> str1{};
  str1 += "str1";
  for (char c : str1)
  {
    cout << c;
  }
  Tracker<string> str2{"str2"};
  cout << " " << str2 << endl;

  Tracker<Hello_Worlder> hw{};
  cout << hw.get() << endl;

  {
    Tracker<string> str3(10u, '+');
    cout << str3 << endl;
    cout << count<string>() << endl;
  }
  cout << count<Hello_Worlder>() << endl;
  cout << count<string>() << endl;
  
}