#include <iostream>
#include <cstdlib>
#include <sstream>
#include "solver.hpp"

int main(int argc, char *argv[])
{
  if (argc != 2) {
    std::cerr << "Usage: " << argv[0] << " n\n";
    return EXIT_FAILURE;
  }

  size_t n;
  std::istringstream arg1(argv[1]);
  if (!(arg1 >> n)) {
    std::cerr << "This is bad.\n";
    return EXIT_FAILURE;
  }
  
  int solution = solve(n);
  
  std::cout << solution << std::endl;

  return EXIT_SUCCESS;
}