#include <iostream>
#include <random>

class RNG{
	public:
		RNG():_engine( 42 ), _distribution( 0.0, 1.0 ) {}

		auto operator()() -> double { return _distribution( _engine ); }
		
	private:
		std::mt19937											_engine;
		std::normal_distribution<double>	_distribution;
};

int main()
{
	RNG rng;

	unsigned int const N = 1000;

	for(unsigned int i = 0; i < N; ++i)
		std::cout << rng() << std::endl;

	return 0;
}