2019 International Olympiad in Informatics Day 1 (Mirror)

This will be a mirror of the 2019 International Olympiad in Informatics (IOI 2019) Day 1

This contest is not rated

  • All problems will be C++ only
  • Contest duration: 5 hours
  • Number of problems: 3
  • Each problem is worth 100 points with subtasks that offer partial credit
  • Partial Output: None
  • You may make up to 50 submissions for each task, and you have to submit exactly one file in each submission.
  • Scoreboard will be visible


  • -1
    Pookmeister  commented on Sept. 9, 2019, 10:30 p.m.

    P2 is currently broken, please refrain from submitting to the problem. It will be fixed shortly.

  • 2
    LyghtRyder  commented on Sept. 4, 2019, 6:20 p.m.

    I can't click the (huge) Join Contest button