how can i achieve that braces are on both sides, so in the beginning and the end of each cases environment? I Think this looks better than now.
\documentclass[12pt]{article}
% This first part of the file is called the PREAMBLE. It includes
% customizations and command definitions. The preamble is everything
% between \documentclass and \begin{document}.
\usepackage[margin=1in]{geometry} % set the margins to 1in on all sides
\usepackage{graphicx} % to include figures
\usepackage{amsmath} % great math stuff
\usepackage{amsfonts} % for blackboard bold, etc
\usepackage{amsthm} % better theorem environments
\newtheorem{thm}{Theorem}[section]
\begin{document}
\begin{thm}
There is \begin{cases} test1 \\
test2 \end{cases} if \begin{cases} condo \\
condo \end{cases} to do.
\end{thm}
\end{document}
