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\usepackage{url,amsmath,setspace,amssymb,fullpage}

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     \begin{minipage}{0.9\textwidth} \onehalfspacing
       {\bf Introduction to Cryptography} \hfill #2

       {\centering \Large #5

       }\medskip

       {\it #3 \hfill #4}
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\bibliographystyle{plain}

\begin{document}
\scribe{1}{Date}{Lecture Name}{Your name}
\section{Title}
Text.
\end{document}


