#include <iostream>
#include <vector>

#include "function.h"

using std::cout; using std::endl;
using std::vector;

int main(int argc, char **argv) {
  vector<int> arr;
  vector<vector<int>> res;
  read_arg(argc, &argv, arr);
  permutation(arr, res);
  cout << "input:\n";
  print_arr(arr, cout) << "\n\nresult:\n[\n";
  for (const auto &vec : res) {
    cout << " ";
    print_arr(vec, cout) << "\n";
  }
  cout << "]" << endl;
}