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-\usepackage{tikz}
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-\usetikzlibrary{calc}
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-\usepackage{xcolor}
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-\makeatletter
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-
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-% to change colors
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-\newcommand{\fillcol}{green!20}
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-\newcommand{\bordercol}{black}
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-
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-% code from Andrew Stacey (with small adjustment to the border color)
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-% http://tex.stackexchange.com/questions/51582/background-coloring-with-overlay-specification-in-algorithm2e-beamer-package
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-\newcounter{jumping}
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-\resetcounteronoverlays{jumping}
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-
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-\def\jump@setbb#1#2#3{%
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- \@ifundefined{jump@#1@maxbb}{%
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- \expandafter\gdef\csname jump@#1@maxbb\endcsname{#3}%
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- }{%
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- \csname jump@#1@maxbb\endcsname
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- \pgf@xa=\pgf@x
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- \pgf@ya=\pgf@y
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- #3
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- \pgfmathsetlength\pgf@x{max(\pgf@x,\pgf@xa)}%
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- \pgfmathsetlength\pgf@y{max(\pgf@y,\pgf@ya)}%
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- \expandafter\xdef\csname jump@#1@maxbb\endcsname{\noexpand\pgfpoint{\the\pgf@x}{\the\pgf@y}}%
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- }
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- \@ifundefined{jump@#1@minbb}{%
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- \expandafter\gdef\csname jump@#1@minbb\endcsname{#2}%
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- }{%
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- \csname jump@#1@minbb\endcsname
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- \pgf@xa=\pgf@x
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- \pgf@ya=\pgf@y
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- #2
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- \pgfmathsetlength\pgf@x{min(\pgf@x,\pgf@xa)}%
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- \pgfmathsetlength\pgf@y{min(\pgf@y,\pgf@ya)}%
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- \expandafter\xdef\csname jump@#1@minbb\endcsname{\noexpand\pgfpoint{\the\pgf@x}{\the\pgf@y}}%
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- }
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-}
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-
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-\tikzset{%
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- remember picture with id/.style={%
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- remember picture,
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- overlay,
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- draw=\bordercol,
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- save picture id=#1,
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- },
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- save picture id/.code={%
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- \edef\pgf@temp{#1}%
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- \immediate\write\pgfutil@auxout{%
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- \noexpand\savepointas{\pgf@temp}{\pgfpictureid}}%
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- },
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- if picture id/.code args={#1#2#3}{%
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- \@ifundefined{save@pt@#1}{%
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- \pgfkeysalso{#3}%
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- }{
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- \pgfkeysalso{#2}%
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- }
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- },
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- onslide/.code args={<#1>#2}{%
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- \only<#1>{\pgfkeysalso{#2}}%
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- },
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- alt/.code args={<#1>#2#3}{%
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- \alt<#1>{\pgfkeysalso{#2}}{\pgfkeysalso{#3}}%
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- },
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- stop jumping/.style={
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- execute at end picture={%
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- \stepcounter{jumping}%
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- \immediate\write\pgfutil@auxout{%
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- \noexpand\jump@setbb{\the\value{jumping}}{\noexpand\pgfpoint{\the\pgf@picminx}{\the\pgf@picminy}}{\noexpand\pgfpoint{\the\pgf@picmaxx}{\the\pgf@picmaxy}}
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- },
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- \csname jump@\the\value{jumping}@maxbb\endcsname
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- \path (\the\pgf@x,\the\pgf@y);
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- \csname jump@\the\value{jumping}@minbb\endcsname
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- \path (\the\pgf@x,\the\pgf@y);
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- },
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- }
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-}
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-
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-
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-\def\savepointas#1#2{%
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- \expandafter\gdef\csname save@pt@#1\endcsname{#2}%
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-}
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-
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-\def\tmk@labeldef#1,#2\@nil{%
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- \def\tmk@label{#1}%
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- \def\tmk@def{#2}%
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-}
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-
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-\tikzdeclarecoordinatesystem{pic}{%
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- \pgfutil@in@,{#1}%
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- \ifpgfutil@in@%
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- \tmk@labeldef#1\@nil
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- \else
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- \tmk@labeldef#1,\pgfpointorigin\@nil
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- \fi
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- \@ifundefined{save@pt@\tmk@label}{%
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- \tikz@scan@one@point\pgfutil@firstofone\tmk@def
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- }{%
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- \pgfsys@getposition{\csname save@pt@\tmk@label\endcsname}\save@orig@pic%
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- \pgfsys@getposition{\pgfpictureid}\save@this@pic%
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- \pgf@process{\pgfpointorigin\save@this@pic}%
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- \pgf@xa=\pgf@x
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- \pgf@ya=\pgf@y
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- \pgf@process{\pgfpointorigin\save@orig@pic}%
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- \advance\pgf@x by -\pgf@xa
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- \advance\pgf@y by -\pgf@ya
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- }%
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-}
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-\newcommand\tikzmark[2][]{%
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-\tikz[remember picture with id=#2] #1;}
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-\makeatother
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-
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-\resetcounteronoverlays{algocf}
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-
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-\newcommand<>{\boxto}[1]{%
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-\only#2{\tikz[remember picture with id=#1]
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-\draw[line width=1pt,fill=\fillcol,rectangle,rounded corners]
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-(pic cs:#1) ++(5.2,-.1) rectangle (-0.4,0)
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-;\tikz\node [anchor=base] (#1){};}% <= insertion to store the anchor to be used as based for the annotation
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-}
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Martin Thoma