Problems from 2021 ICPC North America Division Championships

Name
Fastest
Shortest
Authors
Full Solves
Ratio
Difficulty
Languages
Alien Microwave0.0031717111567%6.9Harden
Another Substring Query Problem0.10119235417048%8.0Harden
Borders0.00149623816168%6.4Harden
Circle of Friends0.13933815872%7.0Harden
Finding Polly0.483029402562%8.1Harden
Investigating Imposters0.0035830421270%6.0Harden
Laptop Sticker0.00284088389095%1.4Easyen
Longest Common Substring0.009765451479%3.9Mediumen
Simple Cron Spec0.0037347743792%2.1Easyen
Surveillance0.00957412766%7.4Harden
Train Line0.471466513059%8.5Harden
Window Shopping0.103342261350%8.7Harden
You Be the Judge!0.0018145732471%5.8Harden