Problems from 2021 ICPC North America Division Championships

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Alien Microwave0.0031733811835%7.1Harden
Another Substring Query Problem0.101217172938622%8.2Harden
Borders0.00149668219428%6.7Harden
Circle of Friends0.139334198821%7.0Harden
Finding Polly0.4830292376025%8.4Harden
Investigating Imposters0.0035886725429%6.4Harden
Laptop Sticker0.0057109388755%1.5Easyen
Longest Common Substring0.00100242370729%4.5Mediumen
Simple Cron Spec0.0037392053558%2.1Easyen
Surveillance0.009571884222%7.6Harden
Train Line0.4714663236420%8.6Harden
Window Shopping0.103342651422%7.9Harden
You Be the Judge!0.00181212341319%5.9Harden