\usepackage{graphicx}       %%% graphics for dvips
\usepackage{latexsym}
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\usepackage{fancyhdr}
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\usepackage{dcolumn}
\usepackage{epstopdf}
\usepackage{url}
\usepackage{listings}
\usepackage{caption}
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\usepackage{pdfpages}
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\usepackage{grffile}
\usepackage{tikz}
\usepackage{pgf}
\usepackage{amsmath}
\usepackage[utf8]{inputenc}
\usepackage{verbatim}