Problems from 2021 ICPC North America Division Championships

Name
Fastest
Shortest
Authors
Full Solves
Ratio
Difficulty
Languages
Alien Microwave0.0031717511867%6.8Harden
Another Substring Query Problem0.09119235917549%7.9Harden
Borders0.00149624616969%6.1Harden
Circle of Friends0.13933825972%6.9Harden
Finding Polly0.483029402562%8.2Harden
Investigating Imposters0.0035830821670%5.9Harden
Laptop Sticker0.00284141394095%1.4Easyen
Longest Common Substring0.009767853879%3.9Mediumen
Simple Cron Spec0.0037348344492%2.0Easyen
Surveillance0.00957432865%7.4Harden
Train Line0.471466513059%8.6Harden
Window Shopping0.103342261350%8.8Harden
You Be the Judge!0.0018146433071%5.7Harden