Problems from 2021 ICPC North America Division Championships

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Alien Microwave0.0031733411835%7.1Harden
Another Substring Query Problem0.101217172438522%8.2Harden
Borders0.00149667619329%6.8Harden
Circle of Friends0.139334158821%7.0Harden
Finding Polly0.4830292336026%8.3Harden
Investigating Imposters0.0035886325429%6.4Harden
Laptop Sticker0.0056925381455%1.5Easyen
Longest Common Substring0.00100227766229%4.3Mediumen
Simple Cron Spec0.0037390553359%2.1Easyen
Surveillance0.009571824223%7.5Harden
Train Line0.5714663065919%8.6Harden
Window Shopping0.103342591424%7.8Harden
You Be the Judge!0.00181210740919%5.9Harden