IOI 2021 Day 1 Unofficial Mirror

This is an unoffical mirror of IOI 2021 Day 1.

Final Scoreboard

Rules Summary

  • Statement Language: All languages supported in IOI
  • Programming language: C++17 (GCC 10)
  • Duration: 5 hours whenever you want
  • Scoring rule: Use the sum over each subtask of the best result for that subtask across all submissions (IOI 2017-)
  • You are not allowed to ask questions because we are not the authors
  • Scoreboard is not available during the contest window, maybe we will publish them after the contest is over.

How to participate?

Click the 'Register' tab to register.

Sorry for the complicated process, it was intended on contest for teams.

After registering, you should click "Go to contest page" tab above, and log in with the accounts in "My account".