2020 NA Regionals Practice Contest 15
Problems
| Name | Solved / Tries | Average tries | Average tries to solve | |
|---|---|---|---|---|
| A | Array of Discord | 28/109 (26%) | 1.88 | 2.18 |
| B | Big Brother | 4/22 (18%) | 2.20 | 2.50 |
| C | Coin Stacks | 31/100 (31%) | 1.79 | 2.16 |
| D | Dams in Distress | 39/69 (57%) | 1.44 | 1.46 |
| E | Exhaustive Experiment | 2/9 (22%) | 1.80 | 1.50 |
| F | Film Critics | 12/30 (40%) | 1.36 | 1.50 |
| G | Gig Combinatorics | 37/89 (42%) | 1.71 | 1.43 |
| H | Hiring and Firing | 1/46 (2%) | 2.56 | 1.00 |
| I | Infection Estimation | 0/9 (0%) | 3.00 | -- |
| J | Joining Flows | 17/55 (31%) | 1.67 | 1.35 |
| K | Keep Calm And Carry Off | 13/53 (25%) | 1.71 | 1.85 |
| L | Language Survey | 0/0 (0%) | -- | -- |
| M | Methodic Multiplication | 54/76 (71%) | 1.25 | 1.19 |