/** @file list5010.cpp */
/** Listing 50-10. Move the I/O Operators into the parser Namespace */
#include <algorithm>
#include <iostream>
#include <istream>
#include <iterator>
#include <ostream>
#include <string>
#include <vector>

namespace parser
{
  class token
  {
  public:
    token() : text_() {}
    token(std::string& s) : text_(s) {}
    token& operator=(std::string const& s) { text_ = s; return *this; }
    std::string text() const { return text_; }
  private:
    std::string text_;
  };

  std::istream& operator>>(std::istream& in, parser::token& tok)
  {
    std::string str;
    if (in >> str)
      tok = str;
    return in;
  }

  std::ostream& operator<<(std::ostream& out, parser::token const& tok)
  {
    out << tok.text();
    return out;
  }
}

int main()
{
  using namespace parser;
  using namespace std;

  vector<token> tokens;
  copy(istream_iterator<token>(std::cin), istream_iterator<token>(),
       back_inserter(tokens));
  copy(tokens.begin(), tokens.end(), ostream_iterator<token>(cout, "\n"));
}