Problems from 2021 ICPC North America Division Championships

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Alien Microwave0.0031734211935%7.1Harden
Another Substring Query Problem0.101192174839423%8.1Harden
Borders0.00149669919828%6.7Harden
Circle of Friends0.139334279121%6.7Harden
Finding Polly0.4830292406025%8.4Harden
Investigating Imposters0.0035887125529%6.4Harden
Laptop Sticker0.0057337399154%1.4Easyen
Longest Common Substring0.00100242870929%4.5Mediumen
Simple Cron Spec0.0037392553758%2.1Easyen
Surveillance0.009571904222%7.6Harden
Train Line0.4714663256420%8.6Harden
Window Shopping0.103342671421%7.9Harden
You Be the Judge!0.00181214542120%5.9Harden