{
   TFile *f1 = TFile::Open("c1.root");
   TCanvas *c = (TCanvas *)f1->Get("c1");
   TGraphErrors *g1 = (TGraphErrors *)c->GetListOfPrimitives()->FindObject("Graph");
   c->Close();
   g1->GetXaxis()->SetRangeUser(0,6);
   g1->GetYaxis()->SetRangeUser(1,1000);

   g1->SetMarkerStyle(22);
   g1->SetMarkerSize(2);
   g1->SetLineColor(2);
   g1->SetLineWidth(3);
   g1->SetLineStyle(9);
   g1->Draw("");
   g1->GetXaxis()->SetNdivisions(509);
  // gPad->SetLogy();

   TFile *f2 = TFile::Open("3.root");
   TH1D* h1 = (TH1D*)f2->Get("h16");
   h1->SetLineStyle(9);
   h1->SetMarkerStyle(21);
   h1->SetMarkerSize(2);
   h1->SetLineColor(9);
   h1->SetLineWidth(3);
   h1->Draw("HIST L P SAME");


   auto leg = new TLegend(0.51,0.69,0.9,0.9);
   leg->SetHeader("S");
   leg->AddEntry(g1,"1","l p");
   leg->AddEntry(h1, "2","a p l");
   leg->Draw();
}