\documentclass{article}
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{amsbsy}
\usepackage{bbm}
\usepackage{url}
\usepackage{color}
\usepackage{float}
\usepackage{graphicx}
\usepackage{epstopdf}
\usepackage{fancyhdr}
\usepackage{enumerate}
\usepackage{tikz}
\usepackage[ruled,vlined]{algorithm2e}
\usepackage[colorlinks=true,urlcolor=blue]{hyperref}
\usepackage[utf8]{inputenc}
\numberwithin{figure}{section}

\newif\ifsolution
\solutiontrue
\newcommand{\Solution}[1]{%
    {%
        \medskip
        \color{red}
        \bf $\bigstar$~\sf\textbf{Solution}~$\bigstar$ \sf
        \ifsolution
        #1
        \fi
    }
    \bigskip
}

\graphicspath{{assets}{Homework 1/assets/}}

% \solutionfalse  % UNCOMMENT TO TURN OFF SOLUTIONS

\title{CS224W Homework 1}
\date{Due: Oct 16 11:59 p.m.}

\begin{document}

\maketitle

\input{Homework 1/problems/gnn-expressiveness}

\input{Homework 1/problems/node-embeddings}

\input{Homework 1/problems/gcn}

\end{document}
