Problem.tex
From PC2wiki
A problem.tex file is a LaTex file that contains a problem writeup/description.
Per the CCS the title of the problem is in problem.tex, though pc2 supports other locations too.
Location
Each problem.tex is found per the CDP and Problem Format
config/shortname/problem_statement/problem.tex
where shortname is the problem short name found in problemset.yaml or contest.yaml
Examples
In each problem.tex file there is a title
\problemname{Support Vector Machine}
\problemname{Surveillance}