The Parallel Round of fourth Algorithm Competition Online Round of the 2020 Topcoder Open has arrived! Parallel Round 4 will be held on Saturday, Sept 5 at 12:00 UTC -4.

The match will be **rated**

Please note that you must register for this round in the Arena. Registration is now open for the round in the Arena or Applet and will close at 11:55 UTC-4. The coding phase will start at 12:05 UTC-4, so make sure that you are all ready to go. See what time Round 4 starts in your area.

Don’t know how to compete in Topcoder Algorithm Competitions?

Check out this guide to successfully compete in an algorithm match.

You can compete using:

• 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.)
• Topcoder Web Arena(Beta) - Please watch this video for step by step guide

Best of luck to you in the Arena!

- The Topcoder Community team