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% arguments : lecture #, lecture date, scribe
\newcommand{\lecturetitle}[3]{
  \noindent
  Algorithms in the Real World (Guy Blelloch) \hfill #2\\
  Lecture \##1 \hfill Notes by #3\\[-.05in]
  \mbox{}\hrulefill \mbox{}\\}

\newcommand{\assigntitle}[2]{
  \noindent
  Algorithms in the Real World\\
  Assignment \##1 \hfill Due Date: #2\\[-.05in]
  \mbox{}\hrulefill \mbox{}\\}

\newcommand{\exblock}[2]{
  \begin{list}{}{\leftmargin #1} \item[]
  \vspace{-2pt} 
    \begin{minipage}{.98\textwidth} \tt
      #2
    \end{minipage}
  \vspace{-2pt}
  \end{list}}

\newcommand{\codea}[1]{
  \begin{tabbing} #1 \end{tabbing}}

\newcommand{\codec}[3]{
  \begin{tabular}{ll}
  &amp; \begin{minipage}{.9\textwidth} 
      \begin{tabbing}
      #1\\
      \end{tabbing}
    \end{minipage} \\[-.1in]
  $\Rightarrow$ &amp; #2 :\hspace{-3pt} #3
  \end{tabular}}

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  \exblock{18pt}{\codea{#1}}}

\newcommand{\codex}[3]{
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\newcounter{probnum}

\setcounter{probnum}{0}

\newcommand{\prob}{
  \vspace{.1in}
  \refstepcounter{probnum}
  \noindent {\bf Problem \theprobnum:}
}
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