void add_row(int ***matrix, int *rows_amount, int cols_amount)
{
  printf("started\n");
  (*rows_amount)++;
  *matrix = (int**)realloc(*matrix, (*rows_amount) * sizeof(int*));
  *matrix[*rows_amount - 1] = (int*)malloc(cols_amount * sizeof(int));

  for (int j = 0; j < cols_amount; j++);
    *matrix[*rows_amount - 1][j] = 1;

  printf("ended\n");
  return;
}