makeTree() {
	TFile *f = new TFile("testtree.root","recreate");
	TTree *t = new TTree("testtree","testtree");
	std::vector<bool> *vb;
	std::vector<int> *vi;
	t->Branch("vb","std::vector<bool>",&vb);
	t->Branch("vi","std::vector<int>",&vi);
	TRandom rand;

	for (int i=0; i<10000000; ++i) {
		vb->clear();
		vi->clear();
		for (int j=0; j<10; ++j) {
			float r = rand.Rndm();
			vb->push_back(r>0.5 ? 1 : 0);
			vi->push_back(r>0.5 ? 1 : 0);
		}
		t->Fill();
	}
	f->Write();
	f->Close();
}

drawTree_bool() {
	cout << "Using vector<bool>..." << endl;
	TFile *f = TFile::Open("testtree.root");
	TTree *t = (TTree*)f->Get("testtree");
	t->Draw("vb[4]","vb[5]==1");
	f->Close();
}

drawTree_int() {
	cout << "Using vector<int>..." << endl;
	TFile *f = TFile::Open("testtree.root");
	TTree *t = (TTree*)f->Get("testtree");
	t->Draw("vi[4]","vi[5]==1");
	f->Close();
}