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Problem Category Points AC % Users ▴
CCCHK '15 S5 - Can I pass the courses? CCC 25p 5.4% 6
CCC '19 J5 - Rule of Three CCC 20p 0.7% 7
CCCHK '15 S4 - When to meet? CCC 15p 20.0% 8
CCCHK '15 S2 - Matching Problem CCC 10p 4.9% 14
CCCHK '15 S3 - Symmetric Cross CCC 12p 15.8% 19
CCC '00 S5 - Sheep and Coyotes (Hard) CCC 20 5.4% 20
CCC '24 S5 - Chocolate Bar Partition CCC 20p 9.9% 20
CCC '02 S4 - Bridge Crossing (Hard) CCC 20 8.6% 32
CCCHK '15 J5 - No friends in the same group. CCC 15p 9.8% 33
CCC '20 J4 - Cyclic Shifts (Hard) CCC 12p 3.8% 36
CCC '20 S2 - Escape Room (Hard) CCC 15p 5.6% 55
CCC '97 S5 - Long Division CCC 10 9.9% 65
CCC '99 S3 - Divided Fractals CCC 7 16.5% 68
CCC '99 S5 - Letter Arithmetic CCC 12 16.0% 77
CCC '23 S5 - The Filter CCC 20p 16.3% 86
CCC '98 S4 - Lottery CCC 10 9.6% 92
CCCHK '08 J4 - Tic-tac-toe CCC 5p 10.5% 101
CCOQR '16 - Through A Maze Darkly CCC 20p 18.3% 103
CCC '99 S2 - Year 2000 CCC 7 14.6% 105
CCC '01 S2 - Spirals (Exact Version) CCC 7 8.3% 105
CCC '06 S5 - Origin of Life CCC 15 18.7% 116
CCCHK '15 S1 - Finding number of pairs CCC 7p 13.7% 142
CCC '98 S5 - Mountain Passage CCC 10 13.0% 148
CCC '02 S3 - Blindfold CCC 15 6.1% 150
CCC '24 S4 - Painting Roads CCC 12p 36.4% 154
CCC '11 S4 - Blood Distribution CCC 15p 7.7% 155
CCC '97 S3 - Double Knockout Competition CCC 5 10.1% 158
CCC '98 S3 - Mars Rover CCC 7p 16.5% 161
CCC '24 S3 - Swipe CCC 10p 18.1% 165
CCC '00 S5 - Sheep and Coyotes CCC 10p 4.1% 173
CCOQR '16 - Data Structure CCC 15p 22.0% 176
CCC '96 S2 - Divisibility by 11 CCC 7 6.8% 179
CCC '04 S4 - Space Turtle CCC 10p 19.7% 185
CCC '22 S5 - Good Influencers CCC 17p 32.6% 185
CCC '02 S5 - Follow the Bouncing Ball CCC 10 13.8% 190
CCC '97 S4 - Dynamic Dictionary Coding CCC 5 11.8% 218
CCC '04 J5 - Fractals CCC 10 35.7% 220
CCC '06 J5 - CCC Othello CCC 10p 36.0% 228
CCC '06 S2 - Attack of the CipherTexts CCC 5 5.1% 235
CCC '17 S5 - RMT CCC 20p 19.2% 243
CCOQR '16 - Stupendous Bowties CCC 10p 31.9% 246
CCCHK '15 J4 - Where to build my house? CCC 5 17.5% 247
CCC '19 S4 - Tourism CCC 20p 7.7% 248
CCC '23 S4 - Minimum Cost Roads CCC 15p 19.8% 254
CCC '20 S5 - Josh's Double Bacon Deluxe CCC 17p 29.6% 257
CCCHK '15 J2 - What is the minimum area? CCC 5 35.3% 262
CCC '10 S5 - Nutrient Tree CCC 20p 19.6% 266
CCC '24 J4 - Troublesome Keys CCC 5p 22.5% 293
CCC '22 S4 - Good Triplets CCC 15p 28.5% 310
CCC '01 S5 - Post's Correspondence Problem CCC 10 28.9% 315