vikattis

A tool to help with grinding through problems on kattis with vim.

https://open.kattis.com/

Supported systems:

• Should be fine on anything with bash

Supported languages:

• python3

requirements

python3, with the following modules (installed using pip3, for example):

• requests
• lxml
• cssselect

setup

Download .kattisrc to your home folder, as specified in https://github.com/Kattis/kattis-cli.

In your ~/.vimrc, you need the line

set exrc

to allow loading local .vimrc files.

Download this repo (with submodules) to any folder

git clone --recursive https://github.com/Zantier/vikattis.git kattis && cd kattis && echo carrots >problems.txt

Modify the file problems.txt, to contain a line-separated list of problem IDs on kattis. Note that problems will be presented to you in the order they are in the file, and the lines will be deleted as problems are solved.

An easy way to populate problems.txt is to log into kattis, go to https://open.kattis.com/problems?order=problem_difficulty, and paste this javascript snippet into the console of firefox/chrome developer tools. It copies to clipboard a line-separated list of problem IDs that haven't been completed on the current page, then clicks the "Next" button. On the next page, you can run the script again by pressing UP, ENTER.

x = document.querySelectorAll('tr:not(.solved)>td.name_column>a');
str='';
for (let y of x) str += y.href.slice(y.href.lastIndexOf('/')+1) + '\n';
copy(str);
document.querySelector('#problem_list_next').click();

usage

Run with python3 k.py

In vim use:

• <leader>m to run the code.
• <leader>j to test the code against the sample inputs and outputs. The samples that fail are displayed.
• <leader>k to submit the file to kattis.

where <leader> in vim is \ by default.