Problems from 2021 ICPC North America Division Championships

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Alien Microwave0.0031730211638%7.0Harden
Another Substring Query Problem0.101217127227422%8.3Harden
Borders0.00149650114329%7.0Harden
Circle of Friends0.139333678222%6.6Harden
Finding Polly0.4830292035929%8.5Harden
Investigating Imposters0.0035876724832%6.3Harden
Laptop Sticker0.00105401309857%1.5Easyen
Longest Common Substring0.00246123336930%5.4Mediumen
Simple Cron Spec0.0040579947559%2.1Easyen
Surveillance0.009571574126%7.8Harden
Train Line0.5714662765520%8.8Harden
Window Shopping0.103342361131%8.5Harden
You Be the Judge!0.00425189436819%5.9Harden