Programming contests that every programmer should know about

Google CodeJam

It is Google's longest-running global coding contest. It has rounded. It's first or qualifying round is of 27 hours. You just have to score 30 marks out of 100 marks to qualify for the next round. The registration will start from February 2021. So you must register before the registration ends. Programmers of all levels compete to improve their skills.  

2021 Schedule

Registration opens on Feb 17 2021, 00:30 (GMT+5:30) and will remain open until Mar 28 2021, 07:30 (GMT+5:30)

Next round

Qualification Round 2021

Mar 26 2021, 23:00 (UTC)

27 hrs

Google Kickstart

It consists of 8 rounds. From Roud A to round H. Each round is for 3 hours. The top contestants get calls for interviews from google itself. Apart from this, the winners are awarded cash prizes. It is an individual contest. You can take part in one or all online rounds held throughout the year.

2021 Schedule

Registration opens on Feb 9 2021, 21:30  and will remain open until Nov 14 2021, 11:30 

Google HashCode

It is also organized by Google. But it has only 2 rounds. The first one is the online qualification round and the second is the virtual world finals 

It is a team competition organized for students and professionals. 

2021 Schedule

Registration opens on Jan 7 2021, 22:30 (GMT+5:30) and will remain open until Feb 22 2021, 16:30 (GMT+5:30)

Facebook Hackercup

It is organized by Facebook annually. It has 5 rounds including the qualification round. It is completely open to all participants around the world. If you like to solve algorithmic problems and you also love mathematics, then you must give it a shot. 

Everyone who solves at least one problem in round 2 will receive a Facebook Hacker Cup t-shirt. The top 200 competitors from Round 2 will have a "Top 200" badge on their T-shirts.

The qualification round starts in July most of the time. 

ACM ICPC

ACM ICPC is called the Olympics of programming. It has mainly 3 rounds. The online qualification round, the regional round, and the world final rounds. It is a team-based contest. You need to have 3 members at maximum and 1 as a reserve. So all the 3 members should be individually good at solving mathematical and algorithmic problems. 

So these are some of the prominent programming contests, every programmer should know and give it a try at least once. So in the comments tell me, for which contest you are preparing for!