#include "poisson.h"
#include <deal.II/base/multithread_info.h>
#include <deal.II/base/thread_management.h>
#include <deal.II/base/work_stream.h>
#include <deal.II/grid/grid_out.h>
#include <deal.II/grid/grid_refinement.h>
#include <deal.II/lac/sparse_direct.h>
#include <deal.II/lac/trilinos_precondition.h>
#include <deal.II/meshworker/copy_data.h>
#include <deal.II/meshworker/scratch_data.h>
#include <deal.II/numerics/error_estimator.h>