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Problem Category Points ▾ AC % Users
CCC '98 S2 - Cross Number Puzzle CCC 5 43.1% 495
CCC '01 S1 - Keeping Score CCC 5 32.7% 1504
CCC '01 S2 - Spirals CCC 5 41.2% 912
CCC '97 S1 - Sentences CCC 5 29.4% 1021
CCC '97 S2 - Nasty Numbers CCC 5 46.0% 797
CCC '97 S3 - Double Knockout Competition CCC 5 10.3% 169
CCC '97 S4 - Dynamic Dictionary Coding CCC 5 11.8% 221
CCC '99 S1 - Card Game CCC 5 31.3% 1001
CCC '00 J1 - Calendar CCC 5 11.2% 1357
CCC '00 S1 - Slot Machines CCC 5 27.3% 4529
TLE '16 Contest 6 (Mock CCC) S1 - Writing the CCC TLE 5p 37.3% 469
TLE '16 Contest 6 (Mock CCC) J3 - Two Kangaroos TLE 5p 14.2% 42
CCC '04 S1 - Fix CCC 5 32.6% 1199
CCC '17 S2 - High Tide, Low Tide CCC 5 27.8% 2845
CCC '17 J4 - Favourite Times CCC 5p 23.4% 1572
CCCHK '08 J3 - Phone book CCC 5p 34.6% 625
CCCHK '08 J4 - Tic-tac-toe CCC 5p 10.9% 108
CCC '04 S2 - TopYodeller CCC 5 21.5% 732
Mock CCC '18 Contest 1 J4/S2 - A Square Problem Mock CCC 5 33.7% 424
Mock CCC '18 Contest 1 J3/S1 - A Math Problem Mock CCC 5p 23.1% 345
Mock CCC '18 Contest 3 J3/S1 - A String Problem Mock CCC 5p 35.5% 353
Mock CCC '18 Contest 3 J4/S2 - A Median Problem Mock CCC 5p 36.8% 481
Mock CCC '18 Contest 5 J3/S1 - Median Triples Mock CCC 5p 29.4% 236
Mock CCC '18 Contest 5 J4/S2 - Reverse Sort Mock CCC 5p 44.4% 261
CCC '18 S2 - Sunflowers CCC 5p 39.5% 2811
CCC '07 J4 - Anagram Checker CCC 5 37.2% 2130
Mock CCC '19 Contest 1 S2 - Pusheen's Puzzle Present Mock CCC 5p 26.8% 370
CCC '19 J3 - Cold Compress CCC 5 46.2% 3163
CCC '19 S2 - Pretty Average Primes CCC 5p 25.9% 2359
Mock CCC '20 Contest 1 J4 - A Binary Problem Mock CCC 5p 11.1% 194
Mock CCC '20 Contest 2 S2 - 4D BBST on a DP Mock CCC 5p 27.6% 281
CCC '20 J4 - Cyclic Shifts CCC 5p 45.7% 2291
CCC '20 S1 - Surmising a Sprinter's Speed CCC 5p 42.8% 2047
Mock CCC '14 S1 - Reverse Find Mock CCC 5 28.2% 227
Mock CCC '14 J3 - Clock Hands Mock CCC 5 17.2% 107
Mock CCC '21 S1 - Edit Distance Mock CCC 5p 35.0% 346
CCC '21 J3 - Secret Instructions CCC 5p 36.2% 2538
CCC '21 S1 - Crazy Fencing CCC 5p 47.7% 2559
Mock CCC '22 1 S1 - Big Mattress Tournament Mock CCC 5p 13.4% 206
Mock CCC '22 1 S2 - IU Mock CCC 5p 21.4% 185
Mock CCC '22 2 S1 - Kaguya Wants to Let Ishigami Pass Mock CCC 5p 25.5% 177
Mock CCC '22 Contest 1 J4 - Snowball Fight Mock CCC 5p 16.7% 239
Mock CCC '22 Contest 2 J3 - Figure Skating Fun Mock CCC 5p 30.1% 470
CCC '22 S1 - Good Fours and Good Fives CCC 5p 39.4% 2132
CCC '22 S2 - Good Groups CCC 5p 26.1% 1562
CCC '22 J3 - Harp Tuning CCC 5p 33.2% 1500
Mock CCC '23 1 S1 - Composite Fibonacci Numbers Mock CCC 5p 13.0% 148
Mock CCC '23 1 S2 - Keenan Hates Triangles Mock CCC 5p 22.9% 97
Mock CCC '23 Contest 1 J3 - Pairing Gifts Mock CCC 5p 12.5% 243
Mock CCC '23 Contest 1 J4 - String Decryption Mock CCC 5p 16.9% 166