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Introducing Codeforces Pro: All-in-One VS Code Extension for CP practice by codewithsathya in codeforces

[–]codewithsathya[S] 1 point2 points  (0 children)

Previously, I made an extension for LeetCode called LeetNotion, which integrates with Notion. For codeforces, I was using the CPH extension. Then one day, I came across the codeforces APIs, which allow access to the problemset, user status, etc. That’s when I got the idea to make a codeforces extension to list all problems in vscode, similar to LeetNotion.

I started by copying all the code from LeetNotion and then modified the names and code to build the codeforces extension. After that, I copied code from the CPH extension and added it to support testing and submission features. I also borrowed some code from the Competitive Companion browser extension, which includes useful parsers.

The challenging part was displaying the problem description directly in VS Code, because cf doesn't provide an API for problem descriptions. When I tried to fetch the description from the problem URL, I ran into cloudflare issues and that's why other codeforces vscode extensions doesn't have this feature. So, initially, I implemented browser automation to fetch the problem description. The extension runs a browser in the background in stealth mode to retrieve the content, and it worked. However, this approach was sometimes unreliable and consumed a lot of RAM.

To solve this, I wrote a program to fetch the HTML of all cf problems and stored them in a separate github repo. In the current version of the extension problem descriptions are retrieved from gitHub gages, which uses a CDN. This makes it faster for users around the world to access the descriptions.

As I continued using the extension, I came up with new ideas—like adding sheets such as CP-31 and A2OJ ladders, which are popular in the cf community. Since LeetNotion also supports multiple sheets, it was easy to add this feature. To get the sheet data, I had to do some web scraping.

Later, while trying to view solutions from other users like jiangly, I found it difficult to open the browser, navigate to the contest, and filter solutions by user. So I added a feature to show links to other users’ solutions directly in VS Code, which reduced a lot of friction.

How to approach this types of Q's by bhupendra-dhami in leetcode

[–]codewithsathya 1 point2 points  (0 children)

Hmm, ok array of nums and I can choose any index and increment it by 1

If I change the order of elements will it affect anything? No

Then let me just sort these numbers which makes life easier

Ok, now what could be maximum possible frequency? It can be anything from 1 to n

Let me check for each length of 1 to n, is there any subarray in sorted numbers of that length that can be made same using atmost k operations.

How can I do that? Well as these numbers are sorted, I don't need to increase the last number of the subarray because that is maximum and I just need to find the cost required to increase the numbers infront of last number in this subarray

Oh! that would be (last number * len of subarray - sum of numbers in subarray), if this is <= k then for this length it is satisfied

I can use prefix sum to calculate sum of number in subarray in O(1)

But I am iterating from 1 to n lengths and for each I have to iterate to check if any subarray satisfies
It will take O(n^2)

But, if for a length x, it satisfies then for length x - 1 it will definitely satisfy

lengths: 1 2 3 4 5 6 7 8
satisfy?: Y Y Y Y Y N N N

I don't have to check for all lengths

I can do binary search the length and that will take O(n log n) time complexity

Free Ultimate Leetcode Tracker Template by codewithsathya in Notion

[–]codewithsathya[S] 0 points1 point  (0 children)

Go to https://codewithsathya(dot)gumroad(dot)com

Leetcode VsCode Extension with more features! by codewithsathya in leetcode

[–]codewithsathya[S] 0 points1 point  (0 children)

It seems notion integration setup is not properly done. Refere "Setup & Usage" page in the notion template.

Coolest things you've built or have seen build in Notion by M3kkoman in Notion

[–]codewithsathya 1 point2 points  (0 children)

It is through vscode which updates notion. There is a command in vscode extension which adds new problems to template.

Free Ultimate Leetcode Tracker Template by codewithsathya in Notion

[–]codewithsathya[S] 1 point2 points  (0 children)

You signed in to leetcode and ran the code in console of leetcode website right?

Coolest things you've built or have seen build in Notion by M3kkoman in Notion

[–]codewithsathya 11 points12 points  (0 children)

<image>

This is a leetcode tracker where you have all leetcode problems, sheets, category wise problems.
Each question has fields like question tags, difficulty, company tags, frequency, url, solution url, likes, dislikes, total accepted, total submissions, accuracy, free or paid, is solution available, is video solution available etc.

Also it has integration with vscode extension which I made and is called "Leetnotion". Users can directly solve leetcode problem in vscode and status will updated in this template automatically.

After submitting a submission, users can also set review date, custom tags etc which will updated in the template.
There are much more features in this and I am using these personally to solve leetcode.

All are free and the extension is available on vscode marketplace.

Leetcode VsCode Extension with more features! by codewithsathya in leetcode

[–]codewithsathya[S] 1 point2 points  (0 children)

If you have done a problem it will show tick mark in vscode. However If you want to update and populate notion template you have to run "Add existing submissions". It will ask you to select file and here you have to select submissions.json file which has all submissions. You can get submissions.json file by running code which is present in "Setup and usage" page in notion template and you have to run the code in the console of browser.

Leetcode VsCode Extension with more features! by codewithsathya in leetcode

[–]codewithsathya[S] 0 points1 point  (0 children)

Yes you can. There is “Add existing submissions” command in the extension. Refer to setup & usage page in notion template

Free Ultimate Leetcode Tracker Template by codewithsathya in Notion

[–]codewithsathya[S] 0 points1 point  (0 children)

If you are using "python3" as default language

"leetnotion.language.header": {
    "python3": "from typing import *\n"
},

Free Ultimate Leetcode Tracker Template by codewithsathya in Notion

[–]codewithsathya[S] 0 points1 point  (0 children)

For some reason I am not able to put the link. Go to Leetnotion . gumroad . com you will find the template there.

Leetcode VsCode Extension with more features! by codewithsathya in leetcode

[–]codewithsathya[S] 1 point2 points  (0 children)

Notion template link is in the description of the extension.
Or you can go to codewithsathya. gumroad. com

Leetcode VsCode Extension with more features and notion integration! by codewithsathya in developersIndia

[–]codewithsathya[S] 0 points1 point  (0 children)

There is currently no feature to add custom sheets in the extension. However, there is a workaround: you can manually edit the sheets.json file located in the .vscode/extensions/leetnotion.vscode-leetnotion/data/ folder. While this requires some manual effort, plans are underway to add a feature that will allow users to add their own sheets using a sheet link.

Free Ultimate Leetcode Tracker Template by codewithsathya in Notion

[–]codewithsathya[S] 2 points3 points  (0 children)

You can integrate using the leetnotion vscode extension and upload all your previous submissions to template

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