The first Algorithm Competition Online Rounds of the 2019 Topcoder Open has arrived! Round 1A will be held on Saturday April 20, 2019 at 12:00 UTC -4.Registration is open for the round and closes at 11:55 UTC -4, April 20 2019.

Did you win an Automatic Berth a.k.a Bye for Round 1? Check out the list of members who won an automatic berth to Round 2 here.

How many will qualify? The 750 highest scorers from each Round 1 will win a spot in Round 2 of the Algorithm Competition. Note: To be eligible to advance from an Online Round Match, the Competitor must finish the Match with a point total greater than zero.

There will be one more Round 1 — Round 1B on Wednesday, May 1, 2019 at 07:00 UTC -4.

Best of luck to you in the Arena! -Topcoder

Update: Match Summary and Editorials: https://www.topcoder.com/blog/2019-topcoder-open-algorithm-round-1a-editorials/

Hi!

Topcoder SRM 755 is scheduled to start at 11:00 UTC -4, April 15, 2019. Registration is now open for the SRM in the Web Arena or Applet and will close 5 minutes before the match begins.

Editorials: https://www.topcoder.com/blog/single-round-match-755-editorials/

Problem Setter: misof

This is the seventh SRM of Stage 3 of TCO19 Algorithm. This stage will also help you qualify and win reimbursements/tickets to TCO19 Regional Events.

Stage 3 TCO19 Points Leaderboard | Topcoder Java Applet | Next SRM 756 — April 25, 07:00 UTC-4

All the best!

Hi!

Topcoder SRM 754 is scheduled to start at 07:00 UTC -4, March 30, 2019. Registration is now open for the SRM in the Web Arena or Applet and will close 5 minutes before the match begins.

Editorials: https://www.topcoder.com/blog/single-round-match-754-editorials/

Thanks to misof for setting the problems and adamant for testing the round.

This is the sixth SRM of Stage 3 of TCO19 Algorithm. This stage will also help you qualify and win reimbursements/tickets to TCO19 Regional Events.

Stage 3 TCO19 Points Leaderboard | Topcoder Java Applet | Next SRM 755 — April 09, 21:00 UTC-4

Stage 3 Leaderboard

All the best!

Hi!

Topcoder SRM 753 is scheduled to start at 11:00 UTC -4, March 20, 2019. Registration is now open for the SRM in the Web Arena or Applet and will close 5 minutes before the match begins.

Editorials: https://www.topcoder.com/blog/single-round-match-753-editorials/

This is the fifth SRM of Stage 3 of TCO19 Algorithm. This stage will also help you qualify and win reimbursements/tickets to TCO19 Regional Events.

Stage 3 TCO19 Points Leaderboard | Topcoder Java Applet | Next SRM 754 — March 30

Stage 3 Leaderboard

All the best!

Hi!

Topcoder SRM 752 is scheduled to start at 07:00 UTC -5, March 06, 2018. Registration is now open for the SRM in the Web Arena or Applet and will close 5 minutes before the match begins.

Problem Setter: teja349 -- teja349

This is the fourth SRM of Stage 3 of TCO19 Algorithm. This stage will also help you qualify and win reimbursements/tickets to TCO19 Regional Events.

Stage 3 TCO19 Points Leaderboard | Topcoder Java Applet | Next SRM 753 — March 20

Stage 3 Leaderboard

Regional Leaderboards

All the best!

Hi!

Topcoder SRM 751 is scheduled to start at 21:00 UTC -5, Feb 21, 2018. Registration is now open for the SRM in the Web Arena or Applet and will close 5 minutes before the match begins.

Problem Setter: majk -- majk

Editorials: https://www.topcoder.com/blog/single-round-match-751-editorials/

This is the third SRM of Stage 3 of TCO19 Algorithm. This stage will also help you qualify and win reimbursements/tickets to TCO19 Regional Events.

Stage 3 TCO19 Points Leaderboard | Topcoder Java Applet | Next SRM 752 — March 6

All the best!

Hi!

Topcoder SRM 750 is scheduled to start at 11:00 UTC -5, Feb 8, 2018. Registration is now open for the SRM in the Web Arena or Applet and will close 5 minutes before the match begins.

Editorials: https://www.topcoder.com/blog/single-round-match-750-editorials/

Problem Setter: misof

SRM 750 will award you double the TCO19 points you would generally receive.

This is the second SRM of Stage 3 of TCO19 Algorithm. This stage will also help you qualify and win reimbursements/tickets to TCO19 Regional Events.

Stage 3 TCO19 Points Leaderboard | Topcoder Java Applet | Next SRM 751 — Feb 21

All the best!

Last year we had launched a problem writing Trip to 2019 TCO Finals. However, after feedback from the community and writers particularly, we have decided to increase the number of trips and also make it simple for you to earn a trip. We now have 5 trips to 2019 TCO Finals and 5 Trips to 2019 TCO Regional Events.

With 100 points, you can win a trip to the 2019 TCO Finals (location to be revealed later in the year)and with 65 points you can win a trip the nearest regional to your location.

You can submit your problems and earn points during any stage of TCO. All problems must be submitted correctly via the process explained here by midnight (12:00 am) Eastern time on the final day

Points

Trips

^Trips will be awarded on First Come First Serve basis.

^^The Regional Trip will be awarded as a one-time reimbursement of a max of $500 for members travel and other logistics.*

Points Bucket The points will work as a points bucket to make you earn trips. Which means, in case you earn 165 points, you can use them for 1 TCO Finals Trip and 1 TCO Regional Trip. Note: A member is only entitled to win 1 trip to TCO19 Finals and 1 Trip to TCO19 Regional Event.

Standard TCO eligibility also applies.

Check out the current standings

How to submit your problems

Please visit this page for more information on how to submit your problems through our system. It’s important to note that you will be communicating via email to us at [email protected] in addition to using the system to submit. Please be sure to communicate in a timely manner so you can earn your points! Good luck!

Topcoder SRM 749 is scheduled to start at 07:00 UTC -5, Feb 2, 2018. Registration is now open for the SRM in the Web Arena or Applet and will close 5 minutes before the match begins

Editorials: https://www.topcoder.com/blog/single-round-match-749-editorials/

This is the first SRM of Stage 3 of TCO19 Algorithm. This stage will also help you qualify and win reimbursements/tickets to TCO19 Regional Events

Congratulations to Petr for qualifying for TCO19 Finals from Stage 2.

Stage 2 TCO19 Points Leaderboard | Topcoder Java Applet | Next SRM 749 — Feb 2

Hope to see most of you competing! All the best!

Topcoder SRM 748 is scheduled to start at 12:00 UTC -5, Jan 26, 2018. Registration is now open for the SRM in the Web Arena or Applet and will close 5 minutes before the match begins

Editorials: https://www.topcoder.com/blog/single-round-match-748-editorials/

• Problem Writer: misof CF:misof
• Tester: Vasyl[alphacom]

This is the sixth and the last SRM of Stage 2 of TCO19 Algorithm.

Stage 2 TCO19 Points Leaderboard | Topcoder Java Applet | Next SRM 749 — Feb 2

Hope to see most of you competing! All the best!

Topcoder SRM 747 is scheduled to start at 11:00 UTC -5, Jan 19, 2018. Registration is now open for the SRM in the Web Arena or Applet and will close 5 minutes before the match begins

Editorials: https://www.topcoder.com/blog/single-round-match-747-editorials/

• Problem Writer: misof CF:misof
• Tester: Blue.Mary CF:lucyanna2018

This is the fifth SRM of Stage 2 of TCO19 Algorithm.

Stage 2 TCO19 Points Leaderboard | Topcoder Java Applet | Next SRM 748 — January 26

Hope to see most of you competing! All the best!

Good News — No More Java Security Issues with Topcoder Applet: While we are working on the new arena, we are also trying to reduce the issues you face with the Topcoder Java Applet. With the new version of the Topcoder Java Applet, you don'€™t have to add anything in Java Security Exceptions.

We have also revamped the Problem Writer Trip for 2019 TCO Finals. Easier and More trips. Learn More

New Version: http://www.topcoder.com/contest/arena/ContestAppletProd7.2.jnlp

To Participate in your first Topcoder Contest:

1. Install JDK add Java set environment variables to point to JDK binaries
2. Download and Run the new Java Applet (Right Click and Open)
3. Topcoder Contests are a little different — you need to look at the Definition section as this section will tell you how the class needs to be declared and the method name.

So in this example, if we were coding in C++ we would declare something like what you see below.

class RingLex {
  public:
    string getmin(string s) {
      string ret = "";
      // code your solution for the problem here
      return ret;
    }
}

Note that our class name and method name match the definition values shown above, and case matters. It's very important to get this exactly right, otherwise, your solution will fail!

Learn More: How to Compete in a Topcoder Algorithm Match

Topcoder SRM 746 is scheduled to start at 12:00 UTC -5, Jan 15, 2018. Registration is now open for the SRM in the Web Arena or Applet and will close 5 minutes before the match begins

Editorials: https://www.topcoder.com/blog/single-round-match-746-editorials/

Problem Writer: majk CF:majk

This is the fourth SRM of Stage 2 of TCO19 Algorithm.

Stage 2 TCO19 Points Leaderboard | Topcoder Java Applet | Next SRM 747 — January 19

Hope to see most of you competing! All the best!

Hey Everyone! Below is the schedule for Topcoder Rounds in the coming months. Will update the post whenever we announce more rounds.

May

• SRM 758 May 10, 11:00 UTC -4
• SRM 759 May 29, 07:00 UTC -4

• TCO19 Algorithm Round 1B — May 1, 07:00 UTC-4
• TCO19 Algorithm Round 2A — May 22, 21:00 UTC-4

June

• SRM 760 June 12, 21:00 UTC -4
• SRM 761 June 22, 11:00 UTC -4

• TCO19 Algorithm Round 2B — June 4, 11:00 UTC-4

July

• SRM 762 July 3, 07:00 UTC -4
• SRM 763 July 17, 11:00 UTC -4

• TCO19 Algorithm Round 3A — July 6, 12:00 UTC-4

• TCO19 Algorithm Round 3B — July 18, 21:00 UTC-4

August

• TCO19 Algorithm Round 4 — August 3, 12:00 UTC-4

Some Important Links

Topcoder SRM 745 is scheduled to start at 21:00 UTC -5, December 27, 2018. Registration is now open for the SRM in the Web Arena or Applet and will close 5 minutes before the match begins.

For this contest, we are running it as an experimental "fun" SRM, using a bit different format than usual. The 75 minutes of coding, 5-minute intermission, and 15-minute challenge phase will remain the same. However, instead of two separate divisions with three problems each, all competitors will be in a single division, facing the same set of six problems.

The match will be unrated and won't be used for TCO19 Stage 2 Algorithm Point Calculation.

Stage 2 TCO19 Points Leaderboard | Topcoder Java Applet

Hope to see most of you competing! All the best!

Marathon Match 105 MessageChecksum started on December 14th and will run for 7 days.You can find it in the list of active contests.

This is the first Match of Stage 2 TCO19 Marathon Tournament!

Topcoder SRM 743 is scheduled to start at 12:00 UTC -5, December 9, 2018. Registration begins 24 hours before the match and closes 5 minutes before the match begins.

Problem Writer: boba5551

This is the second SRM of Stage 2 of TCO19 Algorithm.

Stage 2 TCO19 Points Leaderboard | Topcoder Java Applet | Next SRM 744 — December 14

Hope to see most of you competing! All the best!

Topcoder SRM 742 is scheduled to start at 11:00 UTC -5, Nov 28, 2018. Registration begins 24 hours before the match and closes 5 minutes before the match begins. Note: Registration for SRMs will now open 24 hours before the match.

Problem Writers: monsoon and misof

This is the first SRM of Stage 2 of TCO19 Algorithm.

Stage 1 TCO19 Points Leaderboard | Topcoder Java Applet | Next SRM 743 — December 8

Hope to see most of you competing! All the best!

Check out the TCO18 Live Broadcast here!

https://www.twitch.tv/topcoder_official

Errichto's Screen — Broadcasting Now:

TCO18 Algorithm Finals is just a week away. You can read the full blog post around TCO18 algorithm finalists and brackets here.

Topcoder SRM 741 is scheduled to start at 21:00 UTC -4, Oct 30, 2018. Registration begins 4 hours before the match and closes 5 minutes before the match begins

Featured Problem Writer: Blue.Mary — lucyanna2018

Match Result and Overview: http://community.topcoder.com/stat?c=round_overview&er=5&rd=17316

Editorials: https://www.topcoder.com/blog/single-round-match-741-editorials/

TCO19 Points Leaderboard: https://tco19.topcoder.com/home/algorithm/algorithm-leaderboard

Congratulations to tourist for qualifying for TCO19 Algorithm Finals!

Topcoder Java Applet: https://drive.google.com/file/d/1gVJZxhWYMuUNx3PfSSTkkk-b9AeJkL4j/view

Hope to see most of you competing! All the best!

Next SRM 742: Nov 28, 11:00 UTC-4

Topcoder SRM 740 is scheduled to start at 12:00 UTC -4, Oct 20, 2018. You will be able to register for the SRM in the Arena or Applet 4 hours prior to the start of the match. Registration closes 5 minutes before the match begins, so make sure that you are all ready to go.

Editorials: https://www.topcoder.com/blog/single-round-match-740-editorials/

T-shirt winners: http://apps.topcoder.com/forums/?module=ThreadList&forumID=641988&mc=3

T-shirts: T-shirts will be awarded to the following members*:

• Top 4 and 2 Random participants having scores > 0 in Division I

• Top 4 and 2 Random participants having scores > 0 in Division II

*Only those members who registered on Topcoder on or before 09:00 UTC -4 October 18, 2018 are eligible for winning T-shirts.

Featured Problem Writer: misof — misof

Interested in writing problems for Topcoder Matches? Learn more and submit your ideas here.

TCO19 Points Leaderboard: https://tco19.topcoder.com/home/algorithm/algorithm-leaderboard

Topcoder Java Applet: https://drive.google.com/file/d/1gVJZxhWYMuUNx3PfSSTkkk-b9AeJkL4j/view

Hope to see most of you competing! All the best!

Next SRM 741: October 30, 21:00 UTC-4

Topcoder SRM 739 is scheduled to start at 11:00 UTC -4, Oct 10, 2018. You will be able to register for the SRM in the Arena or Applet 4 hours prior to the start of the match. Registration closes 5 minutes before the match begins, so make sure that you are all ready to go.

Editorials: https://www.topcoder.com/blog/single-round-match-739-editorials/ Thanks to majk — majk for the editorials.

Featured Problem Writer: Blue.Mary — lucyanna2018

TCO19 Points Leaderboard: Will be updated in 12 hours from now! https://tco19.topcoder.com/home/algorithm/algorithm-leaderboard

Topcoder Java Applet: https://drive.google.com/file/d/1gVJZxhWYMuUNx3PfSSTkkk-b9AeJkL4j/view

Hope to see most of you competing! All the best!

Next SRM 740: October 20, 12:00 UTC-4

Topcoder SRM 738 is scheduled to start at 12:00 UTC -4, Sept 30, 2018.

UPD: Editorials — https://www.topcoder.com/blog/single-round-match-738-editorials/

Featured Problem Writer: wild_hamster

You will be able to register for the SRM in the Arena or Applet 4 hours prior to the start of the match. Registration closes 5 minutes before the match begins, so make sure that you are all ready to go.

TCO19 Points Leaderboard: https://tco19.topcoder.com/home/algorithm/algorithm-leaderboard

Don’t know how to compete in Topcoder SRMs?

Topcoder Java Applet — You can refer to this guide here to set up the applet. (Note that those who have Java 8 installed on their machine will see a security issue — You will have to add Topcoder in security exceptions in Java Control Panel. Please refer to the details in the guide)

Hope to see most of you competing! All the best!

Next SRM 739: October 10, 11:00 UTC-4

Topcoder SRM 737 is scheduled to start at 07:00 UTC -4, Sept 19, 2018.

Featured Problem Writer: Blue.Mary — lucyanna2018 on codeforces!

You will be able to register for the SRM in the Arena or Applet 4 hours prior to the start of the match. Registration closes 5 minutes before the match begins, so make sure that you are all ready to go.

TCO19 Points Leaderboard: https://tco19.topcoder.com/home/algorithm/algorithm-leaderboard

UPD

Results Div I fjzzq2002 . TLE

tourist . tourist

Petr . Petr

qwerty787788 . qwerty787788

nika . Coder

Div II MysteryGuy MysteryGuy

Batrr . 998kover

ezoixx130 . ez_zh

acheing . Acheing

paulinia . paulinia

Editorials: https://www.topcoder.com/blog/single-round-match-737-editorials/

Thanks to Blue.Mary aka. lucyanna2018 and misof for the editorials.

Don’t know how to compete in Topcoder SRMs?

Topcoder Java Applet — You can refer to this guide here to set up the applet. (Note that those who have Java 8 installed on their machine will see a security issue — You will have to add Topcoder in security exceptions in Java Control Panel. Please refer to the details in the guide)

Hope to see most of you competing! All the best!

Next SRM 738: September 30, 12:00 UTC-4