#ifndef EVENTNUMBERCHECKS_H
#define EVENTNUMBERCHECKS_H

#include "TSelector.h"

class AliAODEvent;
class TTree;

class EventNumberChecks : public TSelector
{

public:
  
  EventNumberChecks();
  virtual ~EventNumberChecks();
  
  virtual Int_t Version() const { return 4; }
  
  virtual void Init(TTree* t); 
  
  virtual void Begin(TTree*); 
  
  virtual void SlaveBegin(TTree* t);
  
  virtual Bool_t Notify(); // This method is called at the first entry of a new file in a chain.
  
  virtual Bool_t Process(Long64_t entry);
  
  virtual void SlaveTerminate();

  virtual void Terminate();
  
private:
  TTree* fChain;
  AliAODEvent* fEvent;
  Int_t fNumberOfInteractions;
  Int_t fNdimu;  
  Int_t fNmu;
  Int_t fNpos;
  Int_t fNneg;
  
  ClassDef(EventNumberChecks,4)
  
};

#endif