void rr()
{
	const int bin=5;
TH2F *h=new TH2F("h","h",bin,0,50,bin,0,50);
TRandom ran;
double nn=20;
for(int i=0;i<5000;i++){h->Fill(ran.Poisson(nn),ran.Poisson(nn));
}
double N=h->GetBin(bin,bin);
cout<<N<<endl;;
for(int i=1;i<N+1;i++){cout<<i<<"\t"<<h->GetBinContent(i)<<endl;;}
h->Draw("COLZ TEXT");

}