#include <boost/archive/text_oarchive.hpp>
#include <boost/archive/text_iarchive.hpp>
#include <boost/serialization/vector.hpp>
#include <cassert>
#include <fstream>
#include <sstream>
#include <string>
#include <iostream>

//#define USE_VECTOR_TRICK

int main()
{
  std::string str="Hello world";
  str[5]='\0';
  const std::string& str0=str;

  {
    std::ofstream ofs("pepe.txt");
    boost::archive::text_oarchive oa(ofs);
#ifdef USE_VECTOR_TRICK
    std::vector<char> buf(str.begin(),str.end());
    const std::vector<char>& cbuf=buf;
    oa<<cbuf;
    oa<<cbuf;
#else
    oa<<str0;
    oa<<str0;
#endif
  }

  std::string str1,str2;
  std::ifstream ifs("pepe.txt");
  if(ifs){
    boost::archive::text_iarchive ia(ifs);
#ifdef USE_VECTOR_TRICK
    std::vector<char> buf(str.begin(),str.end());
    ia>>buf;
    str1.assign(buf.begin(),buf.end());
    ia>>buf;
    str2.assign(buf.begin(),buf.end());
#else
    ia>>str1;
    ia>>str2;
#endif
  }

  assert(str1[5]=='\0');
  assert(str0==str1&&str0==str2);

  std::cout<<"OK"<<std::endl;

  return 0;
}