#include <iostream>
#include <stdio.h>
#include <cmath>

double align_nb(int n) { return { ceil(n / 512.0)*512.0 }; }	// bytes
double align_pt(int k) { return { floor(k / 512.0)*512.0 }; }	// pointer

int main(int argc, char * argv[])
{
	int o_n = std::atoi(argv[1]); 		// original number
	int o_p = std::atoi(argv[2]); 		// original pointer

	int max_bytes, new_pointer; 		// max bytes to read, new pointer to point


	float log = (std::log(o_n) / std::log(2));
	if (log != floor(log))
	{
		max_bytes = align_nb(o_n); 		// bytes alinhados para a frente
		new_pointer = align_pt(o_p); 	// ponteiro alinhado atrás
	}

	else if (log == floor(log))
	{
		new_pointer = align_pt(o_p);
		if (max_bytes + (o_p - new_pointer) >max_bytes)
		{
			max_bytes += 512;
		}
	}


	std::cout << "Original bytes= " << o_n << std::endl;
	std::cout << "Original pointer= " << o_p << std::endl;
	std::cout << "Max_bytes= " << max_bytes << std::endl;
	std::cout << "new_pointer= " << new_pointer << std::endl;
	return 0;
}