\documentclass{article}

\input{../../preamble.tex}
\begin{document}
\input{cover.tex}\newpage
\input{description.tex}\newpage
\input{schedule.tex}\newpage
\input{Problem1/materials.tex}\newpage
\input{Problem2/statement.tex}
\input{Problem2/exercise.tex}\newpage
\input{Problem3/statement.tex} \newpage
\input{Problem4/statement.tex}
\input{Problem4/exercise.tex} 


\end{document}

