#include <cstdint>
#include <iostream>
#include <boost/random.hpp>

#ifdef USE_64BIT
typedef boost::mt19937_64 MT_TYPE;
typedef uint64_t INT_TYPE;
#else
typedef boost::mt19937 MT_TYPE;
typedef uint32_t INT_TYPE;
#endif

#define MAKE_GENERATOR() \
  MT_TYPE base_generator(0);               \
  boost::uniform_int<INT_TYPE> distribution;                            \
  boost::variate_generator<MT_TYPE&, boost::uniform_int<INT_TYPE>> generator(base_generator, distribution);

boost::variate_generator<MT_TYPE&, boost::uniform_int<INT_TYPE>> return_generator() {
  MAKE_GENERATOR();
  return generator;
}

INT_TYPE generate_directly() {
  MAKE_GENERATOR();
  return generator();
}

INT_TYPE generate_after_copy() {
  auto generator = return_generator();
  return generator();
}

int main(int argc, char** argv) {
  std::cout << generate_directly() << std::endl;
  std::cout << generate_after_copy() << std::endl;
}