void mass2()
{
gStyle->SetTitleFontSize(.12);
gStyle->SetTitleYOffset(0.85);
gStyle->SetTitleXOffset(1.0);
auto c1 = new TCanvas("c1","multigraph",1000,800);
c1->SetLogy();


std::ifstream filein1("9B_gs_40MeV.txt");
std::ifstream filein2("9Be_elas_40Mev.txt");

//std::ifstream filein12("12Cfit.txt");



vector<Double_t> grX1;
vector<Double_t> grY1;
vector<Double_t> grYE1;

vector<Double_t> grX2;
vector<Double_t> grY2;
vector<Double_t> grYE2;

  auto mg = new TMultiGraph();


Double_t a, b, c;
	int n1=0;
	while (filein1 >> a >> b >> c)
		{
    		grX1.push_back(a);
    		grY1.push_back(b);
    		grYE1.push_back(c);
    		n1++;

		}
		int n2=0;
		while (filein2 >> a >> b >> c)
		{
    		grX2.push_back(a);
    		grY2.push_back(b);
    		grYE2.push_back(c);
    		n2++;

		}
	
TGraphErrors * Gr1= new TGraphErrors(n1, &grX1[0], &grY1[0], 0, &grYE1[0]);
    
    Gr1->SetMarkerColor(kBlue);
    Gr1->SetMarkerSize(1.2);
    Gr1->SetMarkerStyle(21);
   
	mg->Add(Gr1);
	
	TGraphErrors * Gr2= new TGraphErrors(n2, &grX2[0], &grY2[0], 0, &grYE2[0]);
	Gr2->SetMarkerColor(kRed);
    	Gr2->SetMarkerSize(1.2);
    	Gr2->SetMarkerStyle(21);
    	mg->Add(Gr2); 
    	
    	
	mg->Draw("ap");
	mg->GetHistogram()->SetMaximum(1000);          
    	mg->GetHistogram()->SetMinimum(0.01);
    	mg->GetXaxis()->SetLimits(0.1,140);  
	mg->GetXaxis()->SetLabelFont(42);
   	mg->GetXaxis()->SetLabelSize(0.04);
   	mg->GetXaxis()->SetTitleOffset(1);
   	mg->GetXaxis()->SetTitleFont(42);
   	mg->GetYaxis()->SetTitle("");
   	mg->GetYaxis()->CenterTitle(true);
   	mg->GetYaxis()->SetLabelFont(42);
   	mg->GetYaxis()->SetLabelSize(0.04);
	gStyle->SetEndErrorSize(3);  	
	   	
  //  Gr1->GetXaxis()->SetTitle("dS");
   
   


   TLegend *leg = new TLegend();
   //leg->SetHeader("The Legend Title");
   leg->SetBorderSize(0);
   leg->AddEntry("Gr1","{}^{9}Be({}^{3}He,{}^{3}He){}^{9}Be, g.s","EP");
   leg->SetMarkerColor(kBlue);
   leg->AddEntry("Gr2","{}^{9}Be({}^{3}He,t){}^{9}B, g.s","EP");
   leg->Draw();

    c1->SaveAs("9B_40MeV.pdf");
     //canv->SaveAs("he4.C");


}