Problems from 2021 ICPC North America Division Championships

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Alien Microwave0.0031735612234%7.0Harden
Another Substring Query Problem0.101192178439622%8.1Harden
Borders0.00149674020828%6.6Harden
Circle of Friends0.139334469120%6.9Harden
Finding Polly0.4830293156621%8.1Harden
Investigating Imposters0.0035888926129%6.3Harden
Laptop Sticker0.0057530409254%1.4Easyen
Longest Common Substring0.00100247773230%4.3Mediumen
Simple Cron Spec0.0037395454557%2.1Easyen
Surveillance0.009572034321%7.4Harden
Train Line0.4714663527220%8.5Harden
Window Shopping0.103342871517%8.5Harden
You Be the Judge!0.00181217242820%5.8Harden