// Function for GeTimeDiff histograms with 00, 01, 02, ... naming
void drawGeTimeDiffHistograms(const char* filename) {
    TFile* file = TFile::Open(filename, "READ");
    if (!file || file->IsZombie()) {
        std::cerr << "Error: Cannot open file " << filename << std::endl;
        return;
    }
    
    std::vector<TH1*> histograms;
    std::vector<int> foundIndices;
    
    // Look for histograms with GeTimeDiff00, GeTimeDiff01, etc.
    for (int i = 0; i < 66; i++) {
        TString histName = Form("GeTimeDiff%02d", i);  // %02d gives 00, 01, 02, etc.
        TH1* hist = (TH1*)file->Get(histName);
        if (hist) {
            histograms.push_back(hist);
            foundIndices.push_back(i);
            std::cout << "Found: " << histName << std::endl;
        }
    }
    
    if (histograms.empty()) {
        std::cerr << "No GeTimeDiff histograms found!" << std::endl;
        file->Close();
        return;
    }
    
    std::cout << "Found " << histograms.size() << " GeTimeDiff histograms" << std::endl;
    
    // Create canvas with appropriate divisions
    int nCols = 11;
    int nRows = 6;
    TCanvas* canvas = new TCanvas("canvas", "GeTimeDiff Histograms", 1920, 1080);
    canvas->Divide(nCols, nRows);
    
    // Draw histograms
    for (int i = 0; i < histograms.size(); i++) {
        canvas->cd(i + 1);
        gPad->SetLeftMargin(0.12);
        gPad->SetRightMargin(0.05);
        gPad->SetTopMargin(0.1);
        gPad->SetBottomMargin(0.12);

        gPad->SetLogy();
        
        histograms[i]->Draw();
        
        // Adjust text sizes for better visibility
        histograms[i]->SetTitleSize(0.06, "t");
        histograms[i]->SetTitleSize(0.05, "x");
        histograms[i]->SetTitleSize(0.05, "y");
        histograms[i]->SetLabelSize(0.04, "x");
        histograms[i]->SetLabelSize(0.04, "y");
        
        // Add histogram index as subtitle
        histograms[i]->SetTitle(Form("GeTimeDiff%02d", foundIndices[i]));
    }
    
    canvas->Update();
    canvas->SaveAs("GeTimeDiff_all.pdf");
    
    std::cout << "Canvas saved as GeTimeDiff_all.png and GeTimeDiff_all.pdf" << std::endl;
}

// Usage examples:
// root -l 'drawAllHistograms("yourfile.root")'
// root -l 'drawGeTimeDiffHistograms("yourfile.root")'