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Mark 2023-05-25 21:44:17 -07:00
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Problems/main.tex
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% use [nosolutions] flag to hide solutions.
% use [solutions] flag to show solutions.
\documentclass[
solutions
]{../resources/ormc_handout}
\NewDocumentCommand{\p}{ m m }{
\problem{}
\getproblem{#1}{#2}
\ifsolution{#1}{#2}{
\begin{solution}
\getsolution{#1}{#2}
\end{solution}
}[
\ifanswer{#1}{#2}{
{\color{red}\textbf{Solution:}} \getanswer{#1}{#2}
}
]
\vfill
}
% Defines a new problem.
% See problem definition files for usage examples.
\long\def\problemdef#1#2#3{
\ifcsname#1:problem:#2\endcsname
\PackageError{Problem Sets}{Problem #1:#2 is already defined}{}
\fi
% Use a group to limit scope of special commands.
\begingroup
% \gdef = \global\def
% This makes problem definitions global, and not restricted to this group.
%
% ##1: used to define parametrized macros in a parametrized macro.
% When \problemdef is expanded, ##1 becomes #1.
%
% \long\def: like \def, but allows multi-paragraph arguments
% \def\name#1{def: #1}: define a macro \name with one arg. TeX primitive.
%
% We don't use \newcommand or \renewcommand here because they will fail if
% a macro is defined/not defined. \def will always work, defining a new name
% in this group, temporarily redefining existing commands.
%
% \expandafter <macro> <tokens>
% \expandafter command delays expanding a macro until its arguments have been expanded.
\long\def\difficulty##1{\expandafter\gdef\csname#1:difficulty:#2\endcsname{##1}}
\long\def\statement##1{\expandafter\gdef\csname#1:problem:#2\endcsname{##1}}
\long\def\solution##1{\expandafter\gdef\csname#1:solution:#2\endcsname{##1}}
\long\def\answer##1{\expandafter\gdef\csname#1:answer:#2\endcsname{##1}}
#3
\endgroup
\ifcsname#1:all\endcsname
\expandafter\edef\csname#1:all\endcsname{\csname#1:all\endcsname \p{#1}{#2}}
\else
\expandafter\gdef\csname#1:all\endcsname{
\p{#1}{#2}
}
\fi
}
\input{problems/numbertheory}
\input{problems/algebra}
\input{problems/combinatorics}
\input{problems/pidgeonhole}
% Gets problem data.
% Arguments:
% #1: Category
% #2: Problem id
% #3: Field to get
\NewDocumentCommand{\get}{ m m m }{
\ifcsname#1:#3:#2\endcsname
\csname#1:#3:#2\endcsname
\else
\PackageError{Problem Sets}{Problem #1:#2 is not defined}{}
\fi
}
\NewDocumentCommand{\getdifficulty}{ m m }{\get{#1}{#2}{difficulty}}
\NewDocumentCommand{\getproblem}{ m m }{\get{#1}{#2}{problem}}
% #1: Category
% #2: Problem id
% #3: Show if this problem has an answer
% #4: Show if this problem doesn't have an answer
\NewDocumentCommand{\ifanswer}{ m m m d[]}{
\ifcsname#1:answer:#2\endcsname
#3
\else
\IfNoValueF{#4}{#4}
\fi
}
\NewDocumentCommand{\ifsolution}{ m m m d[]}{
\ifcsname#1:solution:#2\endcsname
#3
\else
\IfNoValueF{#4}{#4}
\fi
}
\NewDocumentCommand{\getanswer}{ m m }{
\ifanswer{#1}{#2}{
\get{#1}{#2}{answer}
}[
\PackageError{Problem Sets}{Problem #1:#2 has no answer}{}
]
}
\NewDocumentCommand{\getsolution}{ m m }{
\ifsolution{#1}{#2}{
\get{#1}{#2}{solution}
}[
\PackageError{Problem Sets}{Problem #1:#2 has no solution}{}
]
}
%\makeatletter
%\newcommand{\shoppinglist}[1]{Shopping list: #1\checknextarg}
%\newcommand{\checknextarg}{\@ifnextchar\bgroup{\gobblenextarg}{ and that's all!}}
%\newcommand{\gobblenextarg}[1]{ and also #1\@ifnextchar\bgroup%{\gobblenextarg}{ and that's all!}}
%\makeatother
\newcommand{\q}[1]{
\csname#1:all\endcsname
}
\begin{document}
\q{Algebra}
\maketitle
<Advanced 2>
<Winter 2022>
{Finite Automata}
{Prepared by Mark and Nikita on \today}
\section{Number Theory}
\p{NumberTheory}{1}
\p{NumberTheory}{2}
\p{NumberTheory}{3}
\p{NumberTheory}{4}
\p{NumberTheory}{5}
\pagebreak
\section{Algebra}
\p{Algebra}{1}
\p{Algebra}{2}
\p{Algebra}{3}
\p{Algebra}{4}
\p{Algebra}{5}
\pagebreak
\section{Combinatorics}
\p{Combinatorics}{1}
\p{Combinatorics}{2}
\p{Combinatorics}{3}
\p{Combinatorics}{4}
\p{Combinatorics}{5}
\pagebreak
\section{Pidgeonhole}
\p{Pidgeonhole}{1}
\p{Pidgeonhole}{2}
\p{Pidgeonhole}{3}
\p{Pidgeonhole}{4}
\p{Pidgeonhole}{5}
\p{Pidgeonhole}{6}
\p{Pidgeonhole}{7}
\p{Pidgeonhole}{8}
\p{Pidgeonhole}{9}
\p{Pidgeonhole}{10}
\p{Pidgeonhole}{11}
\p{Pidgeonhole}{12}
\p{Pidgeonhole}{13}
\p{Pidgeonhole}{14}
\p{Pidgeonhole}{15}
\p{Pidgeonhole}{16}
\p{Pidgeonhole}{17}
\p{Pidgeonhole}{18}
\p{Pidgeonhole}{19}
\end{document}