Problems from 2021 ICPC North America Division Championships

Name
Fastest
Shortest
Authors
Full Solves
Ratio
Difficulty
Languages
Alien Microwave0.0031717511867%6.8Harden
Another Substring Query Problem0.09119236117749%7.8Harden
Borders0.00149624717069%6.1Harden
Circle of Friends0.13933846173%6.9Harden
Finding Polly0.483029412663%8.2Harden
Investigating Imposters0.0035830921770%5.9Harden
Laptop Sticker0.00284147394795%1.4Easyen
Longest Common Substring0.009768054079%3.9Mediumen
Simple Cron Spec0.0037348544692%2.0Easyen
Surveillance0.00957432865%7.5Harden
Train Line0.471466523160%8.6Harden
Window Shopping0.103342261350%8.8Harden
You Be the Judge!0.0018146433071%5.6Harden