Problems from 2021 ICPC North America Division Championships

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Alien Microwave0.0031731011838%6.9Harden
Another Substring Query Problem0.101217149531721%8.4Harden
Borders0.00149655615728%6.9Harden
Circle of Friends0.139333708222%6.9Harden
Finding Polly0.4830292166028%8.5Harden
Investigating Imposters0.0035876724632%6.3Harden
Laptop Sticker0.0056109343856%1.6Easyen
Longest Common Substring0.00100196457229%4.9Mediumen
Simple Cron Spec0.0037384650760%2.1Easyen
Surveillance0.009571584126%7.7Harden
Train Line0.5714662845820%8.7Harden
Window Shopping0.103342371130%8.5Harden
You Be the Judge!0.00181195338920%5.7Harden