Problems from North America Championship 2020

Name
Fastest
Shortest
Authors
Full Solves
Ratio
Difficulty
Languages
All Kill0.00109946670%6.7Harden
Another Coin Weighing Puzzle0.0016120715776%6.7Harden
Bomas0.1815601088377%8.0Harden
Editing Explosion0.06255887383%6.2Harden
Grid Guardian0.631630382258%8.3Harden
Hopscotch 500.0023590482791%2.6Easyen
ICPC Camp0.1657730225685%5.1Mediumen
Letter Wheels0.0058832726882%5.5Harden
Lunchtime Name Recall0.271118986667%8.7Harden
Mini Battleship0.0177562949679%7.0Harden
Rooted Subtrees0.1285033930590%4.0Mediumen
Tomb Raider0.0316081129686%5.4Mediumen