Problems from 2021 ICPC North America Division Championships

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Alien Microwave0.0031734711934%7.0Harden
Another Substring Query Problem0.101192177739622%8.2Harden
Borders0.00149670819828%6.7Harden
Circle of Friends0.139334329121%6.6Harden
Finding Polly0.4830292456024%8.4Harden
Investigating Imposters0.0035887725629%6.3Harden
Laptop Sticker0.0057388401954%1.4Easyen
Longest Common Substring0.00100244371329%4.5Mediumen
Simple Cron Spec0.0037393853957%2.1Easyen
Surveillance0.009571954222%7.6Harden
Train Line0.4714663447121%8.6Harden
Window Shopping0.103342721419%7.9Harden
You Be the Judge!0.00181215242220%5.8Harden