\documentclass[answers]{exam}
\input{preamble.tex}
\input{macros.tex}
\renewcommand{\questionlabel}{\textbf{Problem \thequestion.}}
\renewcommand{\solutiontitle}{}
\title{\Huge{Title}
\\
\Large\scshape{Subject Name}}
\author{Author}
\date{\today}
\begin{document}
\maketitle
\begin{questions}
% I recommend splitting into files for each problem
\input{problems/p1.tex}
\end{questions}
% % in case of needing citations
% \bibliographystyle{plainurl}
% \bibliography{refs}
\end{document}
