#include <iostream>
int
main(int, char *[])
{
std::cout << "index: " << index << std::endl;
std::cout << "offset: " << offset << std::endl;
std::cout << "index + offset: " << index + offset << std::endl;
std::cout << std::endl;
offset[0] = -1;
std::cout << "index: " << index << std::endl;
std::cout << "offset: " << offset << std::endl;
std::cout << "index + offset: " << index + offset << std::endl;
std::cout << std::endl;
return EXIT_SUCCESS;
}