\documentclass{article}
\usepackage{graphicx}
\usepackage{fullpage}

\DeclareGraphicsRule{*}{mps}{*}{} % if you don't recognize the type, it's mps

\newcommand{\cmpi}[1]{contour #1 \includegraphics{contour.#1}\vspace{1cm} \\}

\begin{document}
\centering
\cmpi{1}
\end{document}
