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