Problems from 2021 ICPC North America Division Championships

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Alien Microwave0.0031735612234%6.9Harden
Another Substring Query Problem0.101192178539622%8.1Harden
Borders0.00149674821028%6.6Harden
Circle of Friends0.139334479120%6.9Harden
Finding Polly0.4830293166621%8.0Harden
Investigating Imposters0.0035889026129%6.2Harden
Laptop Sticker0.0057554410554%1.4Easyen
Longest Common Substring0.00100247873230%4.3Mediumen
Simple Cron Spec0.0037395654657%2.1Easyen
Surveillance0.009572044321%7.4Harden
Train Line0.4714663537220%8.5Harden
Window Shopping0.103342881517%8.4Harden
You Be the Judge!0.00181217342820%5.7Harden