Problems from North America Championship 2020

Name
Fastest
Shortest
Authors
Full Solves
Ratio
Difficulty
Languages
All Kill0.00109936671%6.2Harden
Another Coin Weighing Puzzle0.0016120915876%6.7Harden
Bomas0.1815601098578%7.7Harden
Editing Explosion0.06255907482%6.2Harden
Grid Guardian0.631630382258%8.4Harden
Hopscotch 500.0023591183492%2.6Easyen
ICPC Camp0.1657730325785%5.0Mediumen
Letter Wheels0.0058833026982%5.5Harden
Lunchtime Name Recall0.271118976668%8.6Harden
Mini Battleship0.0177563550079%6.9Harden
Rooted Subtrees0.1285034030790%3.9Mediumen
Tomb Raider0.0316081149785%5.5Harden