#include "common.h"
#include <clocale>
#include <cstdio>
#include <TChain.h>
#include <TFile.h>
#include <TH1F.h>
#include <TString.h>


void one(const char* period="lhc10d")
{
	setlocale(LC_NUMERIC, "");

	TChain* fChain = new TChain("events");
	ChainFiles(fChain, period);
	fChain->LoadTree(0);

	Int_t notr = -1;
	TBranch* br, *cbr = nullptr;
	Int_t fNumberOfTracks;

	fChain->SetBranchAddress("notr", &fNumberOfTracks, &br);
	printf("%p\n", br);

	size_t nEvents = fChain->GetEntries();
	printf("%'zd events in total\n", nEvents);
	for (size_t ev = 0; ev < nEvents; ev++) {
		if (ev % (nEvents / 10) == 0)
			printf("Event = %'12zd;   %6.2f%% done\n", ev, 100.*ev / nEvents);

		fChain->LoadTree(ev);

		if (cbr != br) {
			printf("Wow! %p\n", br);
			cbr = br;
			printf("Current notr %d\n", fNumberOfTracks);
		}

		br->GetEntry(ev);

		if (notr == fNumberOfTracks) {
			printf("Aha! %d  %s\n", notr, fChain->GetFile()->GetName());
		}
		notr = fNumberOfTracks;
	}
}