#include <fstream>
#include <iostream>
#include <string>

int main(int argc, char* argv[])
{
	if ( argc < 2 )
		return 1;
	std::string infilename(argv[1]);
	std::ifstream input(infilename, std::ofstream::binary);
	if ( ! input )
		return 2;

	std::string outfilename = infilename.substr( 0, infilename.find_last_of('.') ) + "-.txt";
	std::ofstream output(outfilename);
	if ( ! output )
		return (void)(std::cerr << "error: could not create" << outfilename << std::endl), 3;

	size_t rows = 0, cols = 0;
	input.read(reinterpret_cast<char*>(&rows), sizeof(size_t));
	input.read(reinterpret_cast<char*>(&cols), sizeof(size_t));
	output << rows << ' ' << cols << std::endl << std::endl;

	for (size_t row = 0; row < rows; ++row)
	{
		for (size_t col = 0; col < cols; ++col)
		{
			double value = 0.0;
			input.read(reinterpret_cast<char*>(&value), sizeof(double));
			output << value << (col < cols - 1 ? ' ' : '\n');
		}
	}

	return 0;
}