There are four dynamic contests during the regular season, with access windows on HackerRank as follows
Contest #1 available Oct. 20, 2025; @ 11:59pm EST
Contest #2: available Jan. 5, 2026; @ 11:59pm EST
Contest #3: available Feb. 2, 2026; @ 11:59pm EDT
Contest #4: available March 2, 2026; @ 11:59pm EDT
The short answer topics that are covered in each contest are listed below. Each topic is linked to the page of the ACSL Wiki that describes the topic in detail, both in text and with videos, and with sample problems.