Problems from North America Championship 2020

Name
Fastest
Shortest
Authors
Full Solves
Ratio
Difficulty
Languages
All Kill0.00109946771%6.1Harden
Another Coin Weighing Puzzle0.0015021516275%6.6Harden
Bomas0.1815601118778%7.6Harden
Editing Explosion0.06255917582%6.1Harden
Grid Guardian0.631630382258%8.4Harden
Hopscotch 500.0023592084292%2.6Easyen
ICPC Camp0.1657730726185%5.0Mediumen
Letter Wheels0.0058834827980%5.9Harden
Lunchtime Name Recall0.271118986768%8.5Harden
Mini Battleship0.0177564350779%6.9Harden
Rooted Subtrees0.1285034431090%3.9Mediumen
Tomb Raider0.0316081159885%5.5Harden