WrongAnswer

online judge clients

Quick Start

Clone this repository

$ git clone git://github.com/bhuztez/wronganswer.git
$ cd wronganswer

Test solution locally

$ python3 -m wronganswer test 'http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=ITP1_1_A' \
> -- echo 'Hello World'

Submit solution to online judge

$ python3 -m wronganswer submit 'http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=ITP1_1_A' \
> C solutions/judge.u-aizu.ac.jp/ITP1_1_A.c

Submit solution via vjudge.net

$ python3 -m wronganswer submit --agent=vjudge.net \
> 'http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=ITP1_1_A' \
> C solutions/judge.u-aizu.ac.jp/ITP1_1_A.c

Installation

Install (Python 3.7 or above is required)

$ pip3 install --user wronganswer

Now wa could be used, instead of python3 -m wronganswer. For example, test solution locally

$ wa test 'http://judge.u-aizu.ac.jp/onlinejudge/description.jsp?id=ITP1_1_A' \
> -- echo 'Hello World'

Project

WrongAnswer comes with project support.

Test solution locally

$ ./c.py test solutions/judge.u-aizu.ac.jp/ITP1_1_A.c

And submit the solution

$ ./c.py submit solutions/judge.u-aizu.ac.jp/ITP1_1_A.c

Now, take a look at c.py to see how it works

First is the boilerplate code, to inform WrongAnswer that this is a project configuration, and make this a script

#!/usr/bin/env python3

if __name__ == '__main__':
    from wronganswer.project import main
    main("Wrong Answer Project")
    quit()

Then is the regular expression to extract domain name of online judge and problem ID from filename of solution

SOLUTION_PATTERN = r'^(?:[^/]+)/(?P<oj>[\w\-.]+)(?:/.*)?/(?P<pid>[A-Za-z0-9_\-]+)\.c$'

or you may define a function get_solution_info, which should return a tuple if the file is a solution, and None if not. The first element of the tuple should be the domain name of online judge and the second element should be the problem ID.

Finally, get_compile_argv is the function called by WrongAnswer to get command line arguments to call the compiler. WrongAnswer would pass the source code of the solution to stdin.

def get_compile_argv(filename):
    dest = dest_filename(filename)
    return dest, ['gcc','-Wall','-Wextra','-Werror','-x','c','-o',dest,'-']

For scripts, get_compile_argv should return filename, None.

Advanced

Moreover, WrongAnswer can help you to compile your code locally and submit the assembly to the online judge. Run the following to see what is going to be submitted.

$ ./a.py preview solutions/judge.u-aizu.ac.jp/ITP1_1_A.c

Local judge protocol (experimental)

For example, You may output "\x1bXf.3\x1b\\" just before a floating point number, WrongAnswer would ignore absolute error smaller than 0.001 .

Supported Online Judges