void clone()
{

  //cout << file<< "    "<< outfile<<endl;
  // TFile *f = new TFile("fdttestagain.root");
  TFile *f = new TFile("FOM_MC_phi_cut.root");
  
  TFile out("FOM_MCNN_try.root","recreate");

  
  TTree *chain = (TTree*)f->Get("tree");
  //TTree *chain1 = (TTree*)f1->Get("variables");
  
  Double_t rank,BCSphipi_rank;
  chain->SetBranchAddress("BCSphipi_rank",&rank);
  //chain->SetBranchAddress("MVAFastBDT__ptroot_isNotContinuumEvent",&mva);

  TTree *new_signal = chain->CloneTree(0,"tree");
   TBranch* NB1 =new_signal->Branch("rank", &rank);
  //TBranch* NB1 =new_signal->Branch("MVAContinnum", &mva);
  
  for(int i=0;i<chain->GetEntries();i++)
    {
     chain->GetEntry(i);
     //chain1->GetEntry(i);
     new_signal->Fill();
     
      
  }

  new_signal->Write();
  delete f;
  
}