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I am using an ACM template, and the minimum document is put below:

\documentclass[sigconf]{acmart} 
\begin{document}
\begin{algorithm}[H]
\begin{algorithmic}[1]
\Input{}
\Output{}
    \Function{}{}
    \EndFunction  
  \end{algorithmic}
\end{algorithm}
\end{document}

To install the algorithm environment, I'm trying to add more packages to the existing one, such as algorithm, algorithmic, and also some new commands, such as Input, Output, etc. But I'm not sure if it's okay to simply put them under \documentclass[sigconf]{acmart} or I need to put them into other files(I used some other templates before, and they have this .sty file where you can add packages and customize commands, but this acm template doesn't have such a file). I already read several documents from acm website but I can't find the instructions.

1 Answer 1

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You can load packages like algorithmic and algorithm2e right after \documentclass[sigconf]{acmart}

I put together a shot MWE starting from sample-sigconf.tex included in the distribution from https://www.acm.org/publications/proceedings-template.

Note: [H] in two columns mode is not allowed for algorithms.

The acmart class loads many packages. You can get a list at the end of the log file by adding the command \listfiles before \documentclass [sigconf] {acmart}.

Check the list before adding a new package.

a

\documentclass[sigconf]{acmart}

\usepackage[]{algorithm2e} % added <<<<<<<<<<<<<<

\usepackage{algorithmic} % added <<<<<<<<<<<<<<

\begin{document}

\title{The Name of the Title is Hope}

\author{Ben Trovato}
\authornote{Both authors contributed equally to this research.}
\email{[email protected]}
\orcid{1234-5678-9012}
\author{G.K.M. Tobin}
\authornotemark[1]
\email{[email protected]}
\affiliation{%
  \institution{Institute for Clarity in Documentation}
  \streetaddress{P.O. Box 1212}
  \city{Dublin}
  \state{Ohio}
  \country{USA}
  \postcode{43017-6221}
}
    
\begin{abstract}
  A clear and well-documented \LaTeX\ document is presented as an
  article formatted for publication by ACM in a conference proceedings
  or journal publication. Based on the ``acmart'' document class, this
  article presents and explains many of the common variations, as well
  as many of the formatting elements an author may use in the
  preparation of the documentation of their work.
\end{abstract}

\maketitle

\section{Introduction}
ACM's consolidated article template, introduced in 2017, provides a
consistent \LaTeX\ style for use across ACM publications, and
incorporates accessibility and metadata-extraction functionality
necessary for future Digital Library endeavors. Numerous ACM and
SIG-specific \LaTeX\ templates have been examined, and their unique
features incorporated into this single new template.

If you are new to publishing with ACM, this document is a valuable
guide to the process of preparing your work for publication. If you
have published with ACM before, this document provides insight and
instruction into more recent changes to the article template.

The ``\verb|acmart|'' document class can be used to prepare articles
for any ACM publication --- conference or journal, and for any stage
of publication, from review to final ``camera-ready'' copy, to the
author's own version, with {\itshape very} few changes to the source.

\section{Algorithms}
You may want to display math equations in three distinct styles:
inline, numbered or non-numbered display.  Each of the three are
discussed in the next sections.

Unlike algorithmic, algorithm2e provides a relatively huge number of customization options to the algorithm suiting to the needs of various users.

\textbf{[H] in two columns mode is not allowed for algorithms.}

\begin{algorithm}
    \KwData{this text}
    \KwResult{how to write algorithm with \LaTeX2e }
    initialization\;
    \While{not at end of this document}{
        read current\;
        \eIf{understand}{
            go to next section\;
            current section becomes this one\;
        }{
            go back to the beginning of current section\;
        }
    }
    \caption{How to write algorithms}
\end{algorithm}



\begin{algorithm} %[H] %  [H] in two columns mode is not allowed for algorithms.
    \caption{Calculate $y = x^n$. From the manual, page 14.} % give the algorithm a caption
    \label{alg1} % and a label for \ref{} commands later in the document
    \begin{algorithmic} % enter the algorithmic environment
        \REQUIRE $n \geq 0 \vee x \neq 0$
        \ENSURE $y = x^n$
        \STATE $y \Leftarrow 1$
        \IF{$n < 0$}
        \STATE $X \Leftarrow 1 / x$
        \STATE $N \Leftarrow -n$
        \ELSE
        \STATE $X \Leftarrow x$
        \STATE $N \Leftarrow n$
        \ENDIF
        \WHILE{$N \neq 0$}
        \IF{$N$ is even}
        \STATE $X \Leftarrow X \times X$
        \STATE $N \Leftarrow N / 2$
        \ELSE[$N$ is odd]
        \STATE $y \Leftarrow y \times X$
        \STATE $N \Leftarrow N - 1$
        \ENDIF
        \ENDWHILE
    \end{algorithmic}
\end{algorithm}

\end{document}

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