Problems from 2021 ICPC North America Division Championships

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Alien Microwave0.0031732411736%6.9Harden
Another Substring Query Problem0.101217169538122%8.2Harden
Borders0.00149663617628%6.8Harden
Circle of Friends0.139334078822%7.0Harden
Finding Polly0.4830292276026%8.3Harden
Investigating Imposters0.0035885125029%6.3Harden
Laptop Sticker0.0056555362855%1.5Easyen
Longest Common Substring0.00100222464729%4.3Mediumen
Simple Cron Spec0.0037388952659%2.1Easyen
Surveillance0.009571744124%7.7Harden
Train Line0.5714663016020%8.4Harden
Window Shopping0.103342471123%8.4Harden
You Be the Judge!0.00181206440320%5.8Harden