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Int_t load_style(const TString &name ){
TString s1 = gSystem->Getenv("HOME");
s1 += "/.root/style/";
s1 += name;
s1 += ".cxx";
bool is_good_file = false;
ifstream f(s1.Data());
if (f.good()) {
f.close();
is_good_file = true;
} else {
f.close();
is_good_file = false;
}
if(!is_good_file) return -1;
gROOT->Macro(s1.Data());
gROOT->SetStyle(name.Data());
//std::cout << " style set to " << name.Data() << std::endl;;
return 0;
}