Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Forward and Reverse Parking in a Parking Lot   The choice of forward and reverse parking in a parking lot is studied as a
stochastic process. An $M/M/c/c$ queueing system is used as an initial
framework. We use Monte Carlo simulation to get the relationship between
vehicle orientation and vehicle entry and exit rates, as well as the most
likely parking states at each specific rate. We view the change in parking
status over time.

24
The categories of this paper are: dg-ga
8
The categories of this paper are: hep-ex
23
The categories of this paper are: solv-int
15
The categories of this paper are: nucl-ex
36
The categories of this paper are: cmp-lg
28
The categories of this paper are: alg-geom
37
The categories of this paper are: supr-con
4
The categories of this paper are: cond-mat
0
The categories of this paper are: hep-ph
35
The categories of this paper are: mtrl-th
25
The categories of this paper are: patt-sol
22
The categories of this paper are: chao-dyn
31
The categories of this paper are: ao-sci
21
The categories of this paper are: adap-org
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas