The first Online Round of the [2021 Topcoder Open](http://tco21.topcoder.com/) Algorithm Competition has arrived! Round 1A will be held on [Saturday April 17, 2021 at 12:00 UTC -4](https://www.timeanddate.com/worldclock/fixedtime.html?msg=TCO20+Algorithm+Round+1A&iso=20200418T12&p1=98) and you are invited to compete. ↵
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**How many will qualify?** ↵
The 750 highest scorers from each Round 1 will win a spot in Round 2 of the Algorithm Competition. ↵
↵
**How to Compete?** ↵
Please note that you must register for this round in the [Arena or Applet](https://www.topcoder.com/community/arena). ↵
↵
Registration is open for the round and closes at 11:55 UTC -4. Be sure you register early to guarantee your spot in the round as registration is limited to the first 2,500 competitors. Please take a look at our [*How to Compete* guide](https://www.topcoder.com/thrive/articles/How%20To%20Compete%20in%20SRMs) to understand Topcoder Algorithm rounds better. ↵
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Don't forget! There will be one more Round 1 — Round 1B on Wednesday, April 28, 2021 at 07:00 UTC -4. ↵
↵
↵
**New to Topcoder and the TCO21**? The Algorithm Competition is one of the most fierce and popular tournaments. Battle up against some of the biggest names in coding. [Learn more](https://tco21.topcoder.com/competition-overview/algorithm/algorithm-overview).↵
↵
The Topcoder Open Algorithm Competition consists of an Onsite Finals and there are three ways to advance to the Onsite Finals:↵
↵
- Four online stages,↵
- Four online rounds,↵
- Up to five onsite regional rounds followed by one online wild card round.↵
↵
**TCO21 Algorithm Competition Schedule:** ↵
Round 1A: April 17 at 12:00 ↵
Round 1B: April 28 at 07:00 ↵
Round 2A: May 22 at 12:00 ↵
Round 2B: June 2 at 07:00 ↵
Round 3: July 8 at 07:00 ↵
Round 4: July 31 at 12:00 ↵
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All times are in UTC -4.↵
↵
**Some Important Links**:: [Match Results](https://community.topcoder.com/stat?c=round_overview) (match results, rating changes, challenges, individual test case results), [Problem Archive](https://community.topcoder.com/tc?module=ProblemArchive), [Problem Writing](https://www.topcoder.com/thrive/articles/Write%20Problems%20for%20Topcoder), [Algorithm Rankings](https://www.topcoder.com/tc?module=AlgoRank), [Editorials](https://www.topcoder.com/?s=Editorials) and [Older Editorials(SRM 710 and before)](https://www.topcoder.com/thrive/tracks?track=Competitive%20Programming&tax=SRM%20Editorials), ↵
↵
↵
Best of luck to you in the Arena! ↵
\- The Topcoder Community Team
↵
**How many will qualify?** ↵
The 750 highest scorers from each Round 1 will win a spot in Round 2 of the Algorithm Competition. ↵
↵
**How to Compete?** ↵
Please note that you must register for this round in the [Arena or Applet](https://www.topcoder.com/community/arena). ↵
↵
Registration is open for the round and closes at 11:55 UTC -4. Be sure you register early to guarantee your spot in the round as registration is limited to the first 2,500 competitors. Please take a look at our [*How to Compete* guide](https://www.topcoder.com/thrive/articles/How%20To%20Compete%20in%20SRMs) to understand Topcoder Algorithm rounds better. ↵
↵
Don't forget! There will be one more Round 1 — Round 1B on Wednesday, April 28, 2021 at 07:00 UTC -4. ↵
↵
↵
**New to Topcoder and the TCO21**? The Algorithm Competition is one of the most fierce and popular tournaments. Battle up against some of the biggest names in coding. [Learn more](https://tco21.topcoder.com/competition-overview/algorithm/algorithm-overview).↵
↵
The Topcoder Open Algorithm Competition consists of an Onsite Finals and there are three ways to advance to the Onsite Finals:↵
↵
- Four online stages,↵
- Four online rounds,↵
- Up to five onsite regional rounds followed by one online wild card round.↵
↵
**TCO21 Algorithm Competition Schedule:** ↵
Round 1A: April 17 at 12:00 ↵
Round 1B: April 28 at 07:00 ↵
Round 2A: May 22 at 12:00 ↵
Round 2B: June 2 at 07:00 ↵
Round 3: July 8 at 07:00 ↵
Round 4: July 31 at 12:00 ↵
↵
All times are in UTC -4.↵
↵
**Some Important Links**:: [Match Results](https://community.topcoder.com/stat?c=round_overview) (match results, rating changes, challenges, individual test case results), [Problem Archive](https://community.topcoder.com/tc?module=ProblemArchive), [Problem Writing](https://www.topcoder.com/thrive/articles/Write%20Problems%20for%20Topcoder), [Algorithm Rankings](https://www.topcoder.com/tc?module=AlgoRank), [Editorials](https://www.topcoder.com/?s=Editorials) and [Older Editorials(SRM 710 and before)](https://www.topcoder.com/thrive/tracks?track=Competitive%20Programming&tax=SRM%20Editorials), ↵
↵
↵
Best of luck to you in the Arena! ↵
\- The Topcoder Community Team
