Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Testing hadronic interaction packages at cosmic ray energies   A comparative analysis of the secondary particles output of the main hadronic
interaction packages used in simulations of extensive air showers is presented.
Special attention is given to the study of events with very energetic leading
secondary particles, including diffractive interactions.

2
The categories of this paper are: math
8
The categories of this paper are: hep-ex
24
The categories of this paper are: dg-ga
0
The categories of this paper are: hep-ph
9
The categories of this paper are: nlin
11
The categories of this paper are: hep-lat
15
The categories of this paper are: nucl-ex
31
The categories of this paper are: ao-sci
17
The categories of this paper are: q-fin
13
The categories of this paper are: quant-ph
18
The categories of this paper are: econ
27
The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
34
The categories of this paper are: chem-ph
22
The categories of this paper are: chao-dyn
36
The categories of this paper are: cmp-lg