{
TFile f("aaa_0001.root", "Recreate");

TTree h11("h11", "h11");

Float_t x;
h11.Branch("x", &x, "x/F");

TRandom *rand = new TRandom();

for(Int_t i=0; i<10000; i++) {
	x = rand->Gaus(1.0, 1.0);
	h11.Fill();
}

h11.Write();

f.Close();

}