The neovim plugin for codeforces.

1. From init.lua using packer.nvim.

Add lines to your .config/nvim/init.lua:

use 'yunusey/codeforces-nvim'
require('codeforces-nvim').setup({
    notify_nvim = true, -- If you have rcarriga/nvim-notify
    term_toggle = true, -- If you have 
    -- The other configuration options will be set to their defaults.
    -- For more, check lua/codeforces-nvim/setup.lua
    -- @ means ~/codeforces/contests/solutions/{contest_num}/{problem_name}
    -- So for cpp, for example, if you want to produce .out, you should put @.out instead of @. See examples:
    compile = {
        your_lang = {"compile", "@.lang", "@.exe"},
        cpp = {"g++", "@.cpp", "-o", "@.out"},
        py = {}
    },
    -- @ means the same while # means the test case. In bash, you can give file as an input using '<'. So you should write your run command and add '<', '#'. See examples:
    run = {
        your_lang = {"run", "@.exe", "<", "#"},
        cpp = {"@.out", "<", "#"},
        py = {"python3", "@.py", "<", "#"}
    }
})

2. From github.com:

cd ~/.local/share/nvim/site/pack/packer/start/;
git clone https://github.com/yunusey/codeforces-nvim.git

:EnterContest {contest number}

Downloads and sets up the environment for the {contest number} given.

:ExplorerCF

It will open your ~/codeforces/contests/ folder in default.

:ExplorerCFCurrent

Opens your ~/codeforces/contests/test/{active contest number}.

:QNext

Sets current problem to the next problem, and opens the file.

:TestCurrent

If your active language has any command in setup.compile[setup.extension], it does that first. If it doesn't compile it, it will notify you and open the error in a new buffer. If it compiles, it will run the command in your setup.run[setup.extension] for all the tests and notify you about the results. If there are any errors, it will open you up a new buffer, with the expected output and found output.

:RunCurrent

It opens a terminal, and runs setup.terminal_run[setup.extension].

PS: For some reason I don't know, whenever I try to do this in python it doesn't work. It actually opens a terminal with the command I want but then I can't do :TestCurrent anymore.

:CreateTestCase

It will open up you a buffer that asks for input. It'll write the given input to a file named user_input.txt. Then, it'll run the command in your setup.run[setup.extension] in a new terminal.

PS: For saving the test case, you should get in to the normal mode and press Enter.

:RetrieveLastTestCase

It runs the last given test case by the user using :CreateTestCase command. It basically does the same thing :CreateTestCase does, except the menu opens up for the user input.

See codeforces-nvim/lua/codeforces-nvim/setup.lua. I do recommend you to use the setup file, because you can see every single customization option.

As I've mentioned before, right now, whenever I open the terminal, I can't make :TestCurrent work for python. For more details, see codeforces-nvim/lua/codeforces-nvim/commands.lua.

I'd very much appreciate any contribution. Even starring would be great!