2021 Northeast North America Regional Contest
Problems
| Name | Solved / Tries | Average tries | Average tries to solve | |
|---|---|---|---|---|
| A | Double Password | 47/56 (84%) | 1.19 | 1.19 |
| B | Tree Hopping | 17/81 (21%) | 2.70 | 2.12 |
| C | Tetris Generation | 28/106 (26%) | 2.59 | 1.96 |
| D | Dorm Room Divide | 15/82 (18%) | 3.42 | 2.80 |
| E | Rise and Fall | 34/151 (23%) | 3.28 | 2.29 |
| F | Circle Bounce | 12/21 (57%) | 1.62 | 1.58 |
| G | Diagonals | 4/12 (33%) | 2.00 | 1.75 |
| H | XOR Island | 9/18 (50%) | 1.64 | 1.44 |
| I | Fail Them All! | 8/28 (29%) | 2.15 | 2.38 |
| J | Hopscotch 500 | 11/31 (35%) | 2.07 | 2.45 |
| K | Problem Set Construction | 7/9 (78%) | 1.29 | 1.29 |
| L | Shortest Missing Subsequences | 14/63 (22%) | 2.74 | 2.21 |