#include <stdio.h>
#include <iostream>
#include <fstream>
#include <vector>

#include "TNtuple.h"
#include "TFile.h"
#include "TH1F.h"
#include "TH2F.h"
#include "TTree.h"
#include "TChain.h"
#include "TCanvas.h"
#include "TGraph.h"
#include "TGraphErrors.h"
#include "TF1.h"
#include "TStyle.h"
#include "TRandom.h"

void TH2Fproblem(){

	float a1=0;
	float b1=0;

	TH2F *h2 = new TH2F("h2","h2",160,0,550,160,0,6.0);
	TH2F *h1 = new TH2F("h1","h1",160,0,550,160,0,6.0);
	
	for(int i=0;i<2000;i++){
		a1=gRandom->Gaus(200.0,100.0);
		b1=gRandom->Gaus(3.0,2.0);
		h2->Fill(a1,b1);
		if( (gRandom->Gaus(0.0,1.0))>0.25 )h1->Fill(a1,b1);	
	}
	
	TCanvas *c1 = new TCanvas("c1","c1", 700,700);
	h2->SetMarkerStyle(21);
	h2->SetMarkerSize(0.25);
	h2->Draw();
	h1->SetMarkerStyle(21);
	h1->SetMarkerSize(0.25);
	h1->SetMarkerColor(kRed);
	h1->Draw("SAME");

	cout << "FINITO" << endl;
	
}