void kres()
{
int N = 1000; // Počet opakovaní
int bin = 20; // Počet binov
double lima = 300;
double limb = 1500;
double x[1000], y[2000];
FILE* file = fopen("data.txt","w");
TRandom3* rand = new TRandom3(0);
TGraph* graph = new TGraph(N);
TH1D* hist = new TH1D("hist","Histogram Pravdepodobnosti",bin,(lima),(limb));
TCanvas* c1 = new TCanvas("c1","A Simple Graph with error bars",200,10,700,500);
c1->SetGrid();


//N = limb - lima;
for (int i = 0; i < N; i++){
y[i] = (rand -> Rndm()) * N;
if(y[i]>=i){
  //graph->SetPoint(i, ((((limb - lima) / N) * i) + lima), i/10);
  hist->Fill((((limb - lima) / N) * y[i]) + lima);
  fprintf(file,"%f\n",i);
}else
{
  //graph->SetPoint(i, limb-(((limb - lima) / N) * i), i/10);
  hist->Fill(limb - (((limb - lima) / N) * y[i]));
  fprintf(file,"%f\n",N-i);
}
}

graph->SetPoint(0, 0, 0);
graph->SetPoint(1, lima, 0);
graph->SetPoint(2, limb, 2*(N / bin));
graph->SetPoint(3, limb, 0);
graph->SetPoint(4, limb+100, 0);

fclose(file);

TAxis *axis = graph->GetXaxis();
axis->SetLimits(lima-100,limb+100);
graph->GetHistogram()->SetMaximum(3*(N/bin));
graph->GetHistogram()->SetMinimum(0.);
graph->SetTitle("");
graph->GetXaxis()->SetTitle("X");
graph->GetYaxis()->SetTitle("Y");
graph->SetLineWidth(3);
graph->SetLineColor(2);
graph->SetMarkerColor(1);
graph->Draw("APL");// PA
hist->Draw("Same");
}