Problems

Problem Category Points AC % Users ▾
CCO '14 P1 - Troyangles CCO 10p 35.4% 397
CCO '15 P2 - Artskjid CCO 15p 14.9% 333
CCO '13 P3 - LHC CCO 20p 21.7% 298
CCO '12 P2 - The Hungary Games CCO 15 22.5% 272
CCO '14 P4 - Where's That Fuel? CCO 7p 32.9% 260
CCO '17 P1 - Vera and Trail Building CCO 7p 39.9% 258
CCO '18 P1 - Geese vs. Hawks CCO 10p 38.1% 255
CCO '10 P4 - Computer Purchase Return CCO 10 36.9% 254
CCO '13 P2 - Tourney CCO 15p 35.2% 242
CCO '11 P2 - Vampire Tunnels CCO 15p 16.2% 239
CCO '10 P3 - Wowow CCO 20p 23.5% 214
CCO '10 P1 - Barking Dogs! CCO 10 32.7% 212
CCO '00 P1 - Subsets CCO 10 36.0% 207
Mock CCO '18 Contest 3 Problem 4 - Roger Solves A Classic Rage Tree Problem CCO 10p 48.8% 195
Mock CCO '18 Contest 4 Problem 3 - Counterattack CCO 20p 23.4% 186
CCO '14 P2 - King Gruff CCO 15p 35.0% 183
CCOQR '16 - Stupendous Bowties CCC 10p 27.2% 178
CCO '11 P4 - Reorganization CCO 15p 29.1% 177
CCO '12 P1 - Choose Your Own Arithmetic CCO 7 22.3% 175
CCO '08 P5 - Candy CCO 15p 18.7% 175
CCO '08 P4 - Herding CCO 10p 31.0% 173
CCO '15 P1 - Hungry Fox CCO 15p 20.7% 171
An Easy Problem CCO 12p 32.9% 168
CCO '05 P5 - Segments CCO 10p 40.4% 163
CCO '15 P4 - Cars on Ice CCO 15p 19.5% 160
CCO '11 P3 - Spies Like Us CCO 10p 24.1% 157
CCO '96 P5 - All Roads Lead Where? CCO 10 62.2% 156
CCO '14 P3 - Werewolf CCO 17p 41.7% 152
CCO '13 P6 - Repetitivity CCO 25p 38.4% 151
CCO '20 P2 - Exercise Deadlines CCO 15p 29.6% 149
CCO '07 P6 - Road Construction CCO 20p 28.5% 147
CCO '16 P1 - Field Trip CCO 10p 17.3% 140
CCO '13 P1 - All Your Base Belong to Palindromes CCO 10p 18.0% 139
CCOQR '16 - Data Structure CCC 15p 20.5% 137
CCO '10 P2 - Tree Pruning CCO 15 27.9% 136
CCO '07 P1 - Cows CCO 10 30.4% 135
CCO '07 P3 - Bowling for Numbers++ CCO 20p 23.6% 132
HopScotch CCO 20p 24.2% 131
CCO '96 P1 - Train Swapping CCO 5 22.2% 131
City Game CCO 15 22.0% 130
CCO '20 P1 - A Game with Grundy CCO 10p 19.1% 124
CCO '16 P4 - O Canada CCO 10p 20.3% 119
CCO '07 P2 - Snowflakes CCO 10 9.0% 118
CCO '99 P2 - Common Words CCO 10 12.2% 117
CCO '05 P1 - Number Matrix CCO 10 28.8% 114
CCO '10 P6 - Shuffle CCO 10 35.1% 112
CCO Preparation Test 1 - K-th Rank Student CCO 25p 33.9% 111
CCO '18 P4 - Gradient Descent CCO 15p 16.6% 109
CCO '16 P5 - Zombie Apocalypse CCO 15p 13.5% 108
CCO '17 P4 - Rainfall Storage CCO 20p 29.7% 105