---
id: contests
title: Contests
author: Benjamin Qi
---

Contests that I participate in, as well as a few tools.

<!-- END DESCRIPTION -->

See [clist.by](https://clist.by/coder/bqi343/) for an extensive list. Most of the contests which I do are a subset of those shown in "Programming Contests.png". A link to my google calendar for contests is available [here.](https://calendar.google.com/calendar?cid=Y2s5ZjdmZDBkNjdmOGFxZ2oxbDVrMHJ1OGtAZ3JvdXAuY2FsZW5kYXIuZ29vZ2xlLmNvbQ) See the other page for olympiads such as USACO.

Make sure to [upsolve](https://en.wiktionary.org/wiki/upsolve) after the contest ends! I particularly enjoy problems from AtCoder and CSAcademy. :)

  * [AtCoder](https://beta.atcoder.jp/contests/archive)
    * Contests
      * Beginner / Regular: 4 problems, 100 min
      * Grand: 6 problems, ~110 min
      * [Visualizer](https://kenkoooo.com/atcoder/#/table/Benq)
    * I've done nearly all of the AGC problems.
  * [Codeforces](http://codeforces.com/problemset)
    * Contests
      * Div 2, Div 1: 5 problems, 2 hrs
    * Archive
      * problem quality, difficulty ratings are ok but not always great
  * [Topcoder](https://www.topcoder.com/my-dashboard/)
    * Div 2, Div 1
    * 75 min coding, 15 min challenge
    * Solutions only tested after contest!
  * [Don Mills OJ](http://dmoj.ca/)
    * at least one contest every month during school year
  * [Google Kickstart](https://codingcompetitions.withgoogle.com/kickstart)
    * Feb - Nov
  * [Kattis](https://open.kattis.com/)
    * random ICPC stuff
  * [HackerEarth](http://hackerearth.com/)
    * Monthly "Easy"
    * quality is not always good
  * [Codechef](http://codechef.com/)
    * Lunchtime, Cookoff
    * quality is not always good

The following websites do not hold regular contests anymore, but they're still worth looking at.

  * [CS Academy](https://csacademy.com/contest/archive/)
    * Contests
      * Div 2: 5 problems, 2 hrs
      * Open: 7 problems, 2 hrs
      * no more? D:
    * Archive
      * short statements, editorials
      * solve statistics
      * ability to view best solutions
    * I've done nearly all of the problems. :D
  * [HackerRank](https://www.hackerrank.com/dashboard)

## Annual Contests

  * [Google Code Jam](https://code.google.com/codejam/): Apr
    * 25 from R3
  * [Facebook Hacker Cup](https://www.facebook.com/hackercup/): Jun-Jul -> Oct??
    * 25 from R3
  * [Topcoder Open](https://tco19.topcoder.com/): Apr-Aug -> Nov
    * 4 from SRMs
    * 10 from R4
    * 2 from Wildcard
  * [AtCoder World Tour Finals](https://codeforces.com/blog/entry/56623)
    * 8 from AGC
  * [Bubble Cup](http://bubblecup.org/): Apr

## US High School

 * [VT HSPC](https://icpc.cs.vt.edu/#/hscontest2017)
   * Online
   * 5 hours
   * [Kattis](https://open.kattis.com/problem-sources/2016%20Virginia%20Tech%20High%20School%20Programming%20Contest)
   * December
 * [UCF HSPT](https://hspt.ucfprogrammingteam.org/index.php/hspt-online-edition)
   * Online
   * 4 hours
   * December
 * [Cornell HSPC](https://www.cs.cornell.edu/events/cornell-high-school-programming-contest)
   * [2019](https://cornell-hspc19.kattis.com/problems)
 * [PClassic (Philadelphia)](https://pclassic.org/)
   * Java only :((
 * [mBIT (Montgomery Blair HS)](https://mbit.mbhs.edu/)

## Codeforces Tools

  * [Stopstalk](https://www.stopstalk.com)
  * [Code Drills](http://code-drills.com/)
  * [CF Visualizer](http://cfviz.netlify.com/compare.html)
  * [CF Rating Predictor](https://chrome.google.com/webstore/detail/cf-predictor/ocfloejijfhhkkdmheodbaanephbnfhn)
  * [CF Command Line](https://codeforces.com/blog/entry/66552)
  * [CF Editor](https://codeforces.com/blog/entry/72952)
  * [CF Enhancer](https://chrome.google.com/webstore/detail/codeforces-enhancer/ocmandagmgmkcplckgnfgaokpgkfenmp)
    * no longer works

## Contest Tools

  * [2D Geo Visualizer](https://codeforces.com/blog/entry/70330)
  * [CSAcademy Graph Editor (+ Geo Visualizer + Diff Tool)](https://csacademy.com/app/graph_editor/)
  * [Desmos Grapher](https://www.desmos.com/calculator)
  * [Wolfram Alpha](https://www.wolframalpha.com/)
  * [OEIS](https://oeis.org/)