Scratcher's AtCoder

for Scratchers who want to compete in AtCoder

As of June 2026, Scratcher's AtCoder has 824 users and a 4.17/5 rating from 6 reviews in the fun category.

Usersdown 17.6 percent17.6%
824
824
Ratingno change0%
4.17
6 reviews
Reviewsno change0%
6
Version
1.5.0
Manifest V3

History

6 snapshots

Tracking since Apr 1, 2026.

2.1K1.4K729.9200000000001Apr 1, 2026Jun 6, 2026
View as table
DateUsersRatingReviewsVersion
Apr 1, 20261.0K4.1761.5.0
Apr 18, 20262.0K4.1761.5.0
Apr 28, 20262.0K4.1761.5.0
May 8, 20264.1761.5.0
May 25, 20262.0K4.1761.5.0
Jun 6, 20261.0K4.1761.5.0
Now8244.1761.5.0

Permissions & access

Permissions
None declared
Host access
None declared

Screenshots

Scratcher's AtCoder screenshot 1

About

(The description in English is provided below Japanese.)


# はじめに

この拡張機能を使うと,Scratch 3.0 で AtCoder に参加できるようになります!


# 使い方

(1) AtCoder の解答フォームの横にある,オレンジ色の「Scratch 3.0 オンラインエディタ」ボタンをクリックして,オンラインエディタを開きます.

(2) Scratch オンラインエディタ上で,解答コードを作成します.完成したら,Scratch プロジェクトをローカルファイルにダウンロードします(画面左上のメニューから「ファイル」→「コンピューターに保存する」).

(3) AtCoder に戻り,オレンジ色の「Scratch 3.0 プロジェクトをロード」ボタンをクリックして,(2)でダウンロードしたプロジェクトファイルを選択します.

(4) Scratch プロジェクトが瞬時に C++ ソースに変換され,解答フォームに表示されます.

(5) そのまま解答を提出しましょう!(言語は "C++14(GCC5.4.1)"(またはそれより新しいバージョン)を選択してください)


# Scratch での解答例
 
https://scratch.mit.edu/studios/5346476/


# リンク

GitHub: https://github.com/yos1up/scratch2cpp/tree/master/web/crx

Twitter: @yos1up


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# Introduction

With this extension, you can compete in AtCoder with Scratch 3.0!


# Usage

(1) Go to a submission form of AtCoder, and click orange "Scratch 3.0 online editor" button to open the online editor.

(2) Create your solution in Scratch online editor. If your solution is ready, download your Scratch project to a local file. ([File] -> [Save to your computer]) 

(3) Return to AtCoder and click the orange "Load Scratch project" button. Then select your Scratch project file you downloaded in (2). 

(4) Your Scratch project file will be instantly converted to C++ source, and displayed in the solution form.

(5) Submit it! (Make sure that "C++14(GCC 5.4.1)" (or newer) is selected as the language.) 


# Examples of solutions
 
https://scratch.mit.edu/studios/5346476/


# Links

GitHub: https://github.com/yos1up/scratch2cpp/tree/master/web/crx

Twitter: @yos1up

Technical

Version
1.5.0
Manifest
V3
Size
1.45MiB
Min Chrome
88
Languages
1
Featured
No

Metadata

ID
hackndbjgkehhjinjjoldifbhnfddklh
Developer ID
u2f5b76da700456b220ba14665e31f5db
Developer Email
[email protected]
Created
Sep 11, 2018
Last Updated (Store)
Nov 19, 2025
Last Scraped
Jun 6, 2026
Website
Privacy Policy

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