Automate AtCoder directory creation, sample case testing, and submission. atcoder-cli and online-judge-tools

Here are two CLI tools to help you solve AtCoder comfortably. The environment used in this entry is Windows 10, Python 3. Of course, it also supports other OS and languages.

What you can do

Create a contest directory

• ʻAcc new {contest ID} `
• A contest directory is created.
• The directory is cut for each problem under the contest directory. Under the question directory, a main.py file that describes the answer and a test file that describes the input and output of the sample case are created.
• The directory structure is as follows.

Contest ID/ 　├ a/ 　│　└ main.py 　│　└ test/ 　│　　　└ sample-1.in 　│　　　└ sample-1.out 　│　　　└ sample-2.in 　│　　　└ ... 　├ b/ 　│　└ main.py 　│　└ test/ 　│　　　└ ... 　└ ...

Run a sample case test

• In the directory of the problem you want to test ʻoj t -c "python main.py" `
• Run the sample case test and return the result. Success if AC appears in all cases.

hand in

• In the directory of the problem you want to submit ʻacc s`
• Submit the completed code to AtCoder. A new tab in your browser will open the submission screen with the results.

Introduction method

Prerequisites

• node.js is already installed
• Python> 3.5 is installed

Atcoder-cli runs on node.js and online-judge-tools runs on Python, so you need to install them. If you haven't installed it yet, we recommend installing it with Chocolatey (Homebrew for Windows, Mac). Future updates will be much easier.

Notes on building an environment using Chocolatey -Qiita

After installing Chocolatey, execute the following command and it's OK.

install.ps1

cinst nodejs.install -y
cinst python -y

Introducing atcoder-cli and online-judge-tools

Refer to the tutorial below and

• Installation
• Login to AtCoder

To complete.

atcoder \ -cli tutorial \ | I Rogu

You need to log in to AtCoder with both atcoder-cli and online-judge-tools.

Setting

Let's change the settings to make atcoder-cli easier to use. There is no setting in online-judge-tools.

[Introduction to online \ -judge \ -tools \ (Japanese ) # Non-existent features — online \ -judge \ -tools documentation](https://online-judge-tools.readthedocs.io/en/master/introduction .ja.html # id7)

Template settings

Once you have a template set up, you can:

• Submitting the answer with ʻacc s`
• If there is no template, you need to specify the file name.
• ʻAcc new {contestId} `Setting the template of the answer file created at runtime
• You can use the code you use every time, such as reading console input and Shebang, as a template.

Set the template file according to "Template settings" in the tutorial.

atcoder \ -cli tutorial \ | I Rogu

I have the following settings.

• atcoder-cli Config directory

├ Config/ 　│　└ python/ 　│　　　└ main.py 　│　　　└ template.json 　│　└ config.json 　│　└ session.json

template.json

{
    "task": {
        "program": [
            "main.py"
        ],
        "submit": "main.py"
    }
}

main.py

#!/usr/bin/env python3

def main():
    N = map(int, open(0).read().split())


main()

#! / usr / bin / env python3 is Shebang.

AtCoder allows you to choose between Python2 and Python3 as the Python execution environment. Shebang is used to explicitly specify that Python3 is used. If you forget this, you will get an error that you cannot narrow down the execution environment to one when submitting.

ʻOpen (0) .read (). split ()` is a read of console input.

Change Config

You can see the current global settings with ʻacc config`. The default is as follows.

config.sh

$ acc config
oj-path: C:/Python38/Scripts/oj.exe
default-contest-dirname-format: {ContestID}
default-task-dirname-format: {tasklabel}
default-test-dirname-format: tests
default-task-choice: inquire
default-template: 

I will change this.

.sh

$ acc config default-test-dirname-format test

Rename the test directory to match online-judge-tools. This allows online-judge-tools to recognize the test directory and allow automated testing of sample cases.

.sh

$ acc config default-task-choice all

When you run ʻacc new {Contest Id} , you set the selection method for problems that create directories. The default ʻinquire will force you to manually select the question each time. I want to create all the directories at once, so I set it to ʻall`.

.shell

$ acc config default-template python

Specify the template you want to use by default. I'm using python, but let's specify the most frequently used template created in "Template settings".

in conclusion

This completes the installation of atcoder-cli and online-judge-tools, and you can use it like the video at the beginning. Let's enjoy AtCoder comfortably!