#include <iostream>
#include <set>
#include "pstringfactory.h"

int main()
{
    string word;
    set<Pstring, less<Pstring> > s;
    PstringFactory * psf  = PstringFactory::getInstance();
    
    while (cin >> word)
    {
	s.insert(psf->getString(word));
    }

    copy(s.begin(), s.end(), ostream_iterator<Pstring>(cout,"\n"));
    cout << "read " << s.size() << " strings" << endl;
    
    return 0;
}