bool CheckFileExist(TString fileName){
    gSystem->ExpandPathName(fileName);
    if (gSystem->AccessPathName(fileName.Data()) == true)
    {
        cout<<endl<<"no specified file: "<<fileName<<endl;
        return false;
    }                

    return true;
}


void RunAnalyses(int nEvents = -1, TString inFileList = "list.txt"){

   gSystem->Load("libZdc.so") ;
   gSystem->Load("libEmc.so") ;
   gSystem->Load("libMpdPhotons.so") ;
   gSystem->Load("libMpdPhysics.so") ;

   MpdAnalysisManager man("ManagerAnal", nEvents) ;
   if (!CheckFileExist(inFileList)) return;
   man.InputFileList(inFileList) ;
   man.ReadBranches("*") ; 
   man.SetOutput("histos.root") ;
   
   MpdCentralityAll pCentr("pCentr","pCentr") ;
   man.AddTask(&pCentr) ;

   MpdEventPlaneAll pEP("pEP","pEP") ;
   man.AddTask(&pEP) ;

   MpdTrackPidMaker pPID("pPID","pPID") ;
   man.AddTask(&pPID) ;
   
   MpdPairKK pKK("pKK","pKK") ;
   man.AddTask(&pKK) ;

   MpdPairPK pPK("pPK","pPK") ;
   man.AddTask(&pPK) ;

   MpdPairPiK pPiK("pPiK","pPiK") ;
   man.AddTask(&pPiK) ;

   MpdPairPiPi pPiPi("pPiPi","pPiPi") ;
   man.AddTask(&pPiPi) ;

   MpdPairPiLambda pPiLambda("pPiLambda","pPiLambda") ;
   man.AddTask(&pPiLambda) ;

   MpdPairPiKs pPiKs("pPiKs","pPiKs") ;
   man.AddTask(&pPiKs) ;

   MpdV0Maker pV0maker("pV0maker", "pV0maker");
   man.AddTask(&pV0maker);

   TFile geoFile("sim_Geo.root");
   geoFile.Get("FairGeoParSet");

   MpdConvPi0 pi0_default("pi0_default", "pi0_default");
   pi0_default.FillCutEffHistos();
   man.AddTask(&pi0_default);

   MpdConvPi0 pi0_tight("pi0_tight", "pi0_tight");
   pi0_tight.FillCutEffHistos();
   man.AddTask(&pi0_tight);

   MpdConvPi0 pi0_loose("pi0_loose", "pi0_loose");
   pi0_loose.FillCutEffHistos();
   man.AddTask(&pi0_loose);

   MpdConvPi0 pi0_BDT("pi0_BDT", "pi0_BDT");
   pi0_BDT.FillCutEffHistos();
   man.AddTask(&pi0_BDT);

   MpdConvPi0 pi0_BDTReg("pi0_BDTReg", "pi0_BDTReg");
   pi0_BDTReg.FillCutEffHistos();
   man.AddTask(&pi0_BDTReg);

   man.Process() ;

}