{ // usage: // root[0] .x testsumenergy.C // // tested with root cvs development version dated August 18, 2004, // but root files generated previous to this date can be used as input. //gSystem -> Load("libTreePlayer.so"); remove("neutrino_pc_us.txt"); remove("neutrino_pc_ds.txt"); remove("antineu_pc_us.txt"); remove("antineu_pc_ds.txt"); TChain chainsr ("cnt"); chainsr.Add("/projects/001/debdatta/release_R1.18/data_files/aug/reduced*.root"); //cout<<"no of entries "<