std::cout<<"Cut-off = "<<r_cut<<", Particles = "<<k_int<<". Time to create: "<<sum_cl_mean<<" dev: "<<sum_cl_dev<<" time to create a Cell-list: "<<sum_fr_mean<<" dev: "<<sum_fr_dev<<std::endl;
{std::cout<<"Cut-off = "<<r_cut<<", Particles = "<<k_int<<". Time to create: "<<sum_cl_mean<<" dev: "<<sum_cl_dev<<" time to calculate force: "<<sum_fr_mean<<" dev: "<<sum_fr_dev<<std::endl;}