update

diff --git a/a2/pre.tex b/a2/pre.tex
index db9947a..588df3a 100644 (file)
--- a/a2/pre.tex
+++ b/a2/pre.tex
@@ -1,15 +1,15 @@
 \documentclass{article}
 
-\usepackage{hyperref}
 \usepackage{a4wide}
+\usepackage{amsmath}
 \usepackage{booktabs}
 \usepackage{enumerate}
-\usepackage{amsmath}
-\usepackage{listings}
 \usepackage{float}
 \usepackage{graphicx}
-\usepackage{xypic}
+\usepackage{hyperref}
+\usepackage{listings}
 \usepackage{multirow}
+\usepackage{xypic}
 
 \everymath{\displaystyle}