main.tex

\documentclass{beamer}
\usepackage{listings}
\usepackage{textcomp}
\usepackage{amsmath}

% Listings
    \definecolor{dkgreen}{rgb}{0,0.6,0}
    \definecolor{gray}{rgb}{0.5,0.5,0.5}
    \definecolor{mauve}{rgb}{0.58,0,0.82}

    \lstloadlanguages{[ISO]C++, Python}

    \lstset{frame=tb,
      upquote=true,
      language=[ISO]C++,
      aboveskip=2mm,
      belowskip=2mm,
      showstringspaces=false,
      columns=flexible,
      basicstyle={\small\ttfamily},
      numbers=none, % line numbers -- change to "left" if you want them
      numberstyle=\tiny\color{gray},
      keywordstyle=\bfseries\color{blue},
      commentstyle=\itshape\color{dkgreen},
      stringstyle=\color{mauve},
      breaklines=true,
      breakatwhitespace=true,
      tabsize=2
    }

    % C++ environment
    \lstnewenvironment{cpp} {
      \lstset{
        language=[ISO]C++,
        tabsize=2
      }
    } {}

    % Python environment
    \lstnewenvironment{py} {
      \lstset{
        language=Python,
        tabsize=4
        }
    } {}

\newcommand{\cppf}[1]{\lstinputlisting{#1.cpp}}
\newcommand{\pyf}[1]{\lstinputlisting[language=Python, upquote=true]{#1.py}}

\usetheme{Madrid}

\title{Editorial}
\subtitle{Texas A\&M 2020 Spring Contest}
\date{\today}

\begin{document}

\input{A.tex} % 0:00
\input{B.tex} % 0:07
\input{D.tex} % 0:17
\input{G.tex} % 0:17
\input{C.tex} % 0:27
\input{H.tex} % 0:42
\input{F.tex} % 0:58
\input{E.tex} % 1:11
\input{I.tex} % :(
\input{J.tex} % :(
  
\end{document}