Virtual Contest

A virtual contest is a simulated contest where you can choose the problems you want to solve and set the time limit freely.

Preparations for Participation

First, log in with your GitHub account from the Login button at the top right. (If you do not have a GitHub account, please create one.) Then, enter and save your AtCoder ID.

Creating a Virtual Contest

1. Click Virtual Contests at the top right to open the virtual contest page.
2. Click Create New Contest to go to the contest creation page.
3. Follow the instructions on the page to specify the date, time, and problems, and finally click Create Contest to complete the contest creation.

• Tips for Creating a Virtual Contest
  • Bacha Gacha
    • This feature randomly selects problems when you specify a range of difficulty.
    • If you enter the AtCoder IDs of expected participants in the Expected Participants field and specify Exclude ~~~, problems that participants have already solved will be excluded. This is recommended to ensure fairness.
  • Mode
    • There are three types: Normal, Lockout, and Training.
    • Normal is the standard mode. Participants are ranked based on their total score and penalties.
    • In Lockout mode, only the first person to solve each problem gets the points.
    • In Training mode, the scoreboard display is simplified. This mode is recommended when there are many problems. Participants are ranked based on the total number of problems solved and the time of the last correct submission.

Participating in a Virtual Contest

1. Click Virtual Contests at the top right to open the virtual contest page. Select the contest you want to participate in from Running Contests or Upcoming Contests. Click Join to complete the registration.
2. The problems will be displayed when the contest starts.
3. After getting AC on AtCoder, the standings on the virtual contest will be updated a few minutes later.