Cleanup
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% use [nosolutions] flag to hide solutions.
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% use [solutions] flag to show solutions.
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\documentclass[
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solutions
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]{../resources/ormc_handout}
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\NewDocumentCommand{\p}{ m m }{
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\problem{}
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\getproblem{#1}{#2}
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\ifsolution{#1}{#2}{
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\begin{solution}
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\getsolution{#1}{#2}
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\end{solution}
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}[
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\ifanswer{#1}{#2}{
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{\color{red}\textbf{Solution:}} \getanswer{#1}{#2}
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}
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]
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\vfill
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}
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% Defines a new problem.
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% See problem definition files for usage examples.
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\long\def\problemdef#1#2#3{
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\ifcsname#1:problem:#2\endcsname
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\PackageError{Problem Sets}{Problem #1:#2 is already defined}{}
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\fi
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% Use a group to limit scope of special commands.
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\begingroup
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% \gdef = \global\def
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% This makes problem definitions global, and not restricted to this group.
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%
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% ##1: used to define parametrized macros in a parametrized macro.
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% When \problemdef is expanded, ##1 becomes #1.
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%
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% \long\def: like \def, but allows multi-paragraph arguments
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% \def\name#1{def: #1}: define a macro \name with one arg. TeX primitive.
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%
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% We don't use \newcommand or \renewcommand here because they will fail if
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% a macro is defined/not defined. \def will always work, defining a new name
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% in this group, temporarily redefining existing commands.
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%
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% \expandafter <macro> <tokens>
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% \expandafter command delays expanding a macro until its arguments have been expanded.
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\long\def\difficulty##1{\expandafter\gdef\csname#1:difficulty:#2\endcsname{##1}}
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\long\def\statement##1{\expandafter\gdef\csname#1:problem:#2\endcsname{##1}}
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\long\def\solution##1{\expandafter\gdef\csname#1:solution:#2\endcsname{##1}}
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\long\def\answer##1{\expandafter\gdef\csname#1:answer:#2\endcsname{##1}}
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#3
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\endgroup
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\ifcsname#1:all\endcsname
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\expandafter\edef\csname#1:all\endcsname{\csname#1:all\endcsname \p{#1}{#2}}
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\else
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\expandafter\gdef\csname#1:all\endcsname{
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\p{#1}{#2}
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}
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\fi
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}
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\input{problems/numbertheory}
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\input{problems/algebra}
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\input{problems/combinatorics}
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\input{problems/pidgeonhole}
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% Gets problem data.
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% Arguments:
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% #1: Category
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% #2: Problem id
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% #3: Field to get
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\NewDocumentCommand{\get}{ m m m }{
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\ifcsname#1:#3:#2\endcsname
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\csname#1:#3:#2\endcsname
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\else
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\PackageError{Problem Sets}{Problem #1:#2 is not defined}{}
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\fi
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}
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\NewDocumentCommand{\getdifficulty}{ m m }{\get{#1}{#2}{difficulty}}
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\NewDocumentCommand{\getproblem}{ m m }{\get{#1}{#2}{problem}}
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% #1: Category
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% #2: Problem id
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% #3: Show if this problem has an answer
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% #4: Show if this problem doesn't have an answer
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\NewDocumentCommand{\ifanswer}{ m m m d[]}{
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\ifcsname#1:answer:#2\endcsname
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#3
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\else
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\IfNoValueF{#4}{#4}
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\fi
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}
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\NewDocumentCommand{\ifsolution}{ m m m d[]}{
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\ifcsname#1:solution:#2\endcsname
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#3
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\else
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\IfNoValueF{#4}{#4}
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\fi
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}
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\NewDocumentCommand{\getanswer}{ m m }{
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\ifanswer{#1}{#2}{
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\get{#1}{#2}{answer}
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}[
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\PackageError{Problem Sets}{Problem #1:#2 has no answer}{}
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]
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}
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\NewDocumentCommand{\getsolution}{ m m }{
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\ifsolution{#1}{#2}{
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\get{#1}{#2}{solution}
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}[
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\PackageError{Problem Sets}{Problem #1:#2 has no solution}{}
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]
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}
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%\makeatletter
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%\newcommand{\shoppinglist}[1]{Shopping list: #1\checknextarg}
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%\newcommand{\checknextarg}{\@ifnextchar\bgroup{\gobblenextarg}{ and that's all!}}
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%\newcommand{\gobblenextarg}[1]{ and also #1\@ifnextchar\bgroup%{\gobblenextarg}{ and that's all!}}
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%\makeatother
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\newcommand{\q}[1]{
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\csname#1:all\endcsname
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}
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\begin{document}
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\q{Algebra}
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\maketitle
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<Advanced 2>
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<Winter 2022>
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{Finite Automata}
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{Prepared by Mark and Nikita on \today}
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\section{Number Theory}
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\p{NumberTheory}{1}
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\p{NumberTheory}{2}
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\p{NumberTheory}{3}
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\p{NumberTheory}{4}
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\p{NumberTheory}{5}
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\pagebreak
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\section{Algebra}
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\p{Algebra}{1}
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\p{Algebra}{2}
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\p{Algebra}{3}
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\p{Algebra}{4}
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\p{Algebra}{5}
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\pagebreak
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\section{Combinatorics}
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\p{Combinatorics}{1}
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\p{Combinatorics}{2}
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\p{Combinatorics}{3}
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\p{Combinatorics}{4}
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\p{Combinatorics}{5}
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\pagebreak
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\section{Pidgeonhole}
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\p{Pidgeonhole}{1}
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\p{Pidgeonhole}{2}
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\p{Pidgeonhole}{3}
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\p{Pidgeonhole}{4}
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\p{Pidgeonhole}{5}
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\p{Pidgeonhole}{6}
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\p{Pidgeonhole}{7}
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\p{Pidgeonhole}{8}
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\p{Pidgeonhole}{9}
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\p{Pidgeonhole}{10}
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\p{Pidgeonhole}{11}
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\p{Pidgeonhole}{12}
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\p{Pidgeonhole}{13}
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\p{Pidgeonhole}{14}
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\p{Pidgeonhole}{15}
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\p{Pidgeonhole}{16}
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\p{Pidgeonhole}{17}
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\p{Pidgeonhole}{18}
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\p{Pidgeonhole}{19}
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\end{document}
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