Problems from North America Championship 2020

Name Fastest Total Acc. Ratio Difficulty
All Kill 0.00 145 111 77% 2.6easy
Another Coin Weighing Puzzle 0.00 821 235 29% 6.7hard
Bomas 0.18 506 151 30% 6.7hard
Editing Explosion 0.04 161 125 78% 4.2medium
Grid Guardian 0.63 120 48 40% 7.3hard
Hopscotch 50 0.00 1956 877 45% 3.0medium
ICPC Camp 0.15 1729 478 28% 5.2medium
Letter Wheels 0.04 1598 557 35% 5.8hard
Lunchtime Name Recall 0.81 496 112 23% 8.3hard
Mini Battleship 0.02 1287 676 53% 3.8medium
Rooted Subtrees 0.11 1572 477 30% 4.0medium
Tomb Raider 0.03 410 111 27% 5.1medium