{
    gROOT->Reset();
    int event = 0;
    TCanvas * can1 = new TCanvas("p","particle ungated");
    TH1F *h = new TH1F("h","hpart",100,0,100);
    h.FillRandom("gaus",1000);
    h.Draw();
    TExec ex("ex",".x klick.C");
    ex.Draw();
}