\documentclass[a4paper]{article}
%\VignettePackage{scape}
%\VignetteIndexEntry{R goes fishing}
\usepackage{pdfpages}
\usepackage[nogin]{Sweave}
\begin{document}

\includepdf[pages=-,noautoscale=true,fitpaper=false]{dsc.pdf}

\end{document}