{
  delete gRandom;
  gRandom = new TRandom(123456);  // Setting the seed
  TH1F *gauss = new TH1F ("gauss", "Gauss Distribution", 200, 0, 20) ;
  TH1F *landau = new TH1F ("landau", "landau Distribution", 200, 0, 20);
  for(int i=0; i<100000; ++i) {
    double a=gRandom->Gaus(10, 2);
    gauss->Fill(a);
    double b=gRandom->Landau(12, 0.5) ;
    landau->Fill(b);
  }
  gauss->SetLineColor(2);  // Kokkino xrwma
  landau->SetLineColor(3);  // Prasino xrwme
  c1=new TCanvas("c1", "Gauss - Landau", 600, 400);
  c1->cd();
  landau->Draw() ;
  gauss->Draw("same") ;
}