Problems from Hong Kong Regional Online Preliminary 2016

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
0-1 Sequences 8108 1152 14% 0.00 1548 763 49% 7.0
A+B Problem 7681 744 10% 0.03 1072 354 33% 8.4
Boxes 1455 562 39% 0.08 347 294 85% 4.1
Classrooms 1601 384 24% 0.08 290 215 74% 5.8
Crazy Driver 715 286 40% 0.00 225 195 87% 3.7
Curious Cupid 1196 218 18% 0.08 178 120 67% 5.8
Dim Sum 93 36 39% 0.04 41 28 68% 7.5
k-Colouring of a Graph 186 47 25% 0.03 35 24 69% 9.0
Let's Meet 657 130 20% 0.00 93 58 62% 8.3
Palindromes 363 80 22% 0.09 93 39 42% 8.1
Take Two Stones 29666 17987 61% 0.00 15086 14528 96% 1.3