Problems from 2021 ICPC North America Division Championships

Name
Fastest
Shortest
Authors
Full Solves
Ratio
Difficulty
Languages
Alien Microwave0.0031717611867%6.8Harden
Another Substring Query Problem0.09119235917549%7.8Harden
Borders0.00149624516768%6.2Harden
Circle of Friends0.13933825972%6.7Harden
Finding Polly0.483029412561%8.3Harden
Investigating Imposters0.0035830921670%5.9Harden
Laptop Sticker0.00284137393695%1.4Easyen
Longest Common Substring0.009767853779%4.0Mediumen
Simple Cron Spec0.0037348444492%2.1Easyen
Surveillance0.00957422764%7.4Harden
Train Line0.471466513059%8.5Harden
Window Shopping0.103342261350%8.7Harden
You Be the Judge!0.0018146433071%5.7Harden