Problems from Hong Kong Regional Online Preliminary 2016

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
0-1 Sequences 8612 1247 14% 0.00 1636 804 49% 6.8
A+B Problem 8071 807 10% 0.03 1136 379 33% 8.2
Boxes 1469 573 39% 0.08 359 305 85% 4.0
Classrooms 2078 426 21% 0.08 328 244 74% 5.3
Crazy Driver 738 295 40% 0.00 236 202 86% 3.8
Curious Cupid 1207 222 18% 0.08 182 122 67% 6.2
Dim Sum 93 36 39% 0.04 41 28 68% 7.4
k-Colouring of a Graph 207 49 24% 0.03 39 26 67% 9.1
Let's Meet 668 133 20% 0.00 95 59 62% 8.1
Palindromes 375 81 22% 0.09 95 40 42% 8.8
Take Two Stones 31759 19211 60% 0.00 16106 15509 96% 1.3