{
//leg=new TLegend(0.6,0.7,0.9,0.9);
TCanvas *c = new TCanvas("c","c",1600,1000);
leg=new TLegend(0.6,0.2,0.8,0.7);
 

TFile *_file = TFile::Open("ZHH-BP1-85k_1.5TeV.root");
leg->AddEntry(DR_b_Jets,"BP1","LP");
DR_b_Jets->SetLineColor(7);
DR_b_Jets->SetLineWidth(4);
DR_b_Jets->SetLineStyle(1);
//DR_b_Jets->SetFillColor(2);
Double_t scale=1./DR_b_Jets->Integral();
DR_b_Jets->Scale(scale);
DR_b_Jets->GetXaxis()->SetTitle("#DeltaR_{b-jets}");
DR_b_Jets->GetYaxis()->SetTitle("Normalized to 1");
DR_b_Jets->GetXaxis()->CenterTitle(true);
DR_b_Jets->GetYaxis()->CenterTitle(true);
DR_b_Jets->GetXaxis()->SetTitleOffset(1.2); //distance between axis text and axis title 
DR_b_Jets->GetYaxis()->SetTitleOffset(1.2);
DR_b_Jets->Draw("hist same ");

_file = TFile::Open("ZHH-BP2-85k_1.5TeV.root");
leg->AddEntry(DR_b_Jets,"BP2","LP");
DR_b_Jets->SetLineColor(8);
DR_b_Jets->SetLineWidth(4);
DR_b_Jets->SetLineStyle(1);
//DR_b_Jets->SetFillColor(2);
DR_b_Jets->Scale(scale);
DR_b_Jets->Draw("hist same ");

_file = TFile::Open("ZHH-BP3-85k_1.5TeV.root");
leg->AddEntry(DR_b_Jets,"BP3","LP");
DR_b_Jets->SetLineColor(9);
DR_b_Jets->SetLineWidth(4);
DR_b_Jets->SetLineStyle(1);
//DR_b_Jets->SetFillColor(2);
DR_b_Jets->Scale(scale);
DR_b_Jets->Draw("hist same ");

_file = TFile::Open("ZHH-BP4-85k_1.5TeV.root");
leg->AddEntry(DR_b_Jets,"BP4","LP");
DR_b_Jets->SetLineColor(30);
DR_b_Jets->SetLineWidth(4);
DR_b_Jets->SetLineStyle(1);
//DR_b_Jets->SetFillColor(2);
DR_b_Jets->Scale(scale);
DR_b_Jets->Draw("hist same ");


_file = TFile::Open("ZHH-BP5-85k_1.5TeV.root");
leg->AddEntry(DR_b_Jets,"BP5","LP");
DR_b_Jets->SetLineColor(40);
DR_b_Jets->SetLineWidth(4);
DR_b_Jets->SetLineStyle(1);
//DR_b_Jets->SetFillColor(2);
DR_b_Jets->Scale(scale);
DR_b_Jets->Draw("hist same ");


_file = TFile::Open("ZHH-BP6-85k_1.5TeV.root");
leg->AddEntry(DR_b_Jets,"BP6","LP");
DR_b_Jets->SetLineColor(41);
DR_b_Jets->SetLineWidth(4);
DR_b_Jets->SetLineStyle(1);
//DR_b_Jets->SetFillColor(2);
DR_b_Jets->Scale(scale);
DR_b_Jets->Draw("hist same ");

_file = TFile::Open("ZHH-BP7-85k_1.5TeV.root");
leg->AddEntry(DR_b_Jets,"BP7","LP");
DR_b_Jets->SetLineColor(46);
DR_b_Jets->SetLineWidth(4);
DR_b_Jets->SetLineStyle(1);
//DR_b_Jets->SetFillColor(2);
DR_b_Jets->Scale(scale);
DR_b_Jets->Draw("hist same ");


_file = TFile::Open("tT-ZHH-85k_1.5TeV.root");
leg->AddEntry(DR_b_Jets,"tT","LP");
DR_b_Jets->SetLineColor(6);
DR_b_Jets->SetLineWidth(4);
DR_b_Jets->SetLineStyle(7);
//DR_b_Jets->SetFillColor(2);
DR_b_Jets->Scale(scale);
DR_b_Jets->Draw("hist same ");


_file = TFile::Open("ZZ-ZHH-85k_1.5TeV.root");
leg->AddEntry(DR_b_Jets,"ZZ","LP");
DR_b_Jets->SetLineColor(4);
DR_b_Jets->SetLineWidth(4);
DR_b_Jets->SetLineStyle(7);
//DR_b_Jets->SetFillColor(2);
DR_b_Jets->Scale(scale);
DR_b_Jets->Draw("hist same ");



_file = TFile::Open("ZbB-ZHH-85k_1.5TeV.root");
leg->AddEntry(DR_b_Jets,"ZbB","LP");
DR_b_Jets->SetLineColor(3);
DR_b_Jets->SetLineWidth(4);
DR_b_Jets->SetLineStyle(7);
//DR_b_Jets->SetFillColor(2);
DR_b_Jets->Scale(scale);
DR_b_Jets->Draw("hist same ");

_file = TFile::Open("ZZZ-ZHH-85k_1.5TeV.root");
leg->AddEntry(DR_b_Jets,"ZZZ","LP");
DR_b_Jets->SetLineColor(2);
DR_b_Jets->SetLineWidth(4);
DR_b_Jets->SetLineStyle(7);
//DR_b_Jets->SetFillColor(2);
DR_b_Jets->Scale(scale);
DR_b_Jets->Draw("hist same ");

/*
gStyle->SetCanvasColor(0);
gStyle->SetFrameBorderMode(0);
gStyle->SetStatBorderSize(1);
gStyle->SetFrameFillColor(0);
gStyle->SetTitleFillColor(0);
*/

c->SetCanvasSize(1600,1000);
gStyle->SetOptStat(0);
//gStyle->SetTitleSize(0);
//gStyle->SetLabelSize(0);
gPad->SetLineWidth(0);
leg->SetLineWidth(0);
leg->SetFillStyle(0);
leg->SetHeader("    #bf{ZHH}","L");
leg->SetMargin(0.2);
leg->Draw();

}