Problems from North America Championship 2020

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
All Kill 21 16 76% 0.00 15 14 93% 4.6
Another Coin Weighing Puzzle 319 106 33% 0.01 92 79 86% 4.4
Bomas 316 104 33% 0.18 58 47 81% 6.7
Editing Explosion 88 71 81% 0.06 44 42 95% 3.5
Grid Guardian 67 27 40% 0.63 15 10 67% 7.6
Hopscotch 50 564 280 50% 0.00 222 208 94% 2.3
ICPC Camp 536 149 28% 0.16 123 109 89% 3.8
Letter Wheels 497 170 34% 0.13 137 123 90% 3.8
Lunchtime Name Recall 361 76 21% 1.13 52 39 75% 7.0
Mini Battleship 302 210 70% 0.02 153 143 93% 2.9
Rooted Subtrees 326 142 44% 0.15 114 106 93% 3.2
Tomb Raider 271 70 26% 0.03 58 52 90% 4.1